On Saber at the end of Heaven's Feel

Hello! Apologies to anyone who attempts to read this for the massive block of text, but I've been chewing on this for a while and wanted to post it in a place where I might get someone to argue against it.

My basic point is this: Shirou displays a shocking lack of regard for Saber in Heaven's Feel, above and beyond that needed to save Sakura, and claims to accept the consequences for it while actually facing none. To be clear, none of this is about killing Saber - that's clearly necessary based both on the narrative of the route and the general F/SN theme of 'saving one person means abandoning another'. I'm focused on his complete lack of concern for her suffering in the route.

Here's my understanding of things: Midway through the route, he convinces her to go to Ryudou temple to hunt for the Shadow (despite having no plan on how to actually fight it). This leads to Saber appearing to die (but actually being turned into an Alter). Later, he tells Rider that it was his fault, and at one point gets sad when someone reminds him of how Saber used to say his name. Almost immediately after that scene Saber Alter enters the route, as do my complains.

As far as I can tell at no point after the introduction of Saber Alter does Shirou feel bad about her essentially being mind raped or feel guilt that he didn't just get her killed, he got her very sense of self violated. In fact, he barely thinks about her at all except to remake that he'll probably have to overcome her at some point. In UBW, he's desperate to save her from Caster, but her suffering a worse fate in HF doesn't seem to bother him at all. Is this how somebody acts when a friend of theirs has been tortured, had their very identity lobotomized? This extends to his final speech to her:

There were memories. There was the warmth of life. Her warmth was always by my side. I kill her along with those memories. I search through my mind and throw them away to where I can't find them again. They'll never return. I'll never recall her now. ―――Such a thing will never be forgiven. I chose this path. I killed someone else to save Sakura. Using my own hands, I killed someone who protected me until the very end. Neither regret nor a confession will bring forgiveness....This is what it means to ally with someone. I'll keep sacrificing important things for the one I love.And on this path... There's nothing brilliant enough to make up for what I've lost.

"But Saber――――" I'll search all my life for happiness that can measure up to what I've lost. I'll keep losing more than I gain, and I know I'll stop someday. But―――I'm going to take responsibility for stealing things away, even if I'm pathetic, comical, or meaningless. I don't know where I can find happiness. But I swear to myself that I'll never give up, even if I can't see the end."――――Thanks. You saved me many times.

This is supposed to be a farewell speech to Saber, and yet every line but the very last one is about him! She's the one who has been tormented and killed, and yet he can't even spare a though for her, he's exclusively focused on his own pain! If a friend said this to me, I wouldn't think they cared about me, I'd think they were completely self-serving and fishing for pity in the guise of an apology. And on the topic of apologies, its perfectly reasonable that he doesn't apologize for killing her, its what must be done to save Sakura. But he doesn't apologize for taking her to the temple, for helping cause her suffering in the first place?

Finally, his promise to take responsibility is well and completely full of shit. He promises to take responsiblity for stealing things (i.e. her life) ... while actively forgetting her! That's the literal opposite of taking responsibility, that's straight up running away from the problem! And in the true ending, he sees no consequences and faces no responsibility. He quite literally forgets all his trauma and moves on in a new body, which the VN is happy to explain to us in excruciating detail is the exact same in all observable facets as his original body. (Side note, the fact that Shirou is happy in the true ending because he threw away his trauma, his memories of Saber, gives the bizarre implication that the path to happiness lies in running away from and ignoring your problems. This is supposed to be a happy ending, right?)

Heaven's Feel is trying to make this scene be one where he regretfully kills his friends because it is necessary to save Sakura, and yet what we get goes beyond that into straight up callousness and a total lack of concern for Saber, and this lack of concern goes completely unaddressed and despite all the works he and Kirei spend on responsibility for one's sins he ultimately faces absolutely no consequences for it (in the true ending, at least. This doesn't apply to the normal ending, which in general works way better than the true ending but is also a completely sadistic way to end the VN).

(One more side note, it seems quite possible that Saber's eventual fate post-HF is eternal torment as a Counter Guardian. If so, it really calls into question the framing of HF true as a 'happy ending'. "A group of friends move on to live happy lives while their other friend burns in hell forever" isn't happy, its quite literally a horror movie ending straight out of Hellraiser or Drag me to Hell. It's also essentially equivalent to the classic philosophical/theological problem of grief in heaven. I know some of you will reply with the F/SN theme of 'you can't save everyone', but that line merely means that a better ending isn't possible, it doesn't make this one a happy one).