What is your thoughts on current end-game Terraria?

I just completed all bosses with a bunch of friends on normal and then just now expert. I love this game so much, the content has completely blown me away.

Though one thing everyone came to agree too in our group of 6 was that after the Cultist boss (Which is my favorite boss btw), the game just kinda drops. It feels awkward and kinda thrown together for the pillars and then the final boss.

Maybe because everything previously took a lot of preparation as a group, arena building, carving out space that all took time, then suddenly everything is thrown at you with the pillars and boss? Honestly I'm not sure what it was, but I guess not a lot of us felt all that satisfied after. Don't mean to pick about it, I can see why it would be difficult to have an ending? and I have had nothing but fun with the game, was just curious if anyone else had similar experience.