Why does the internet love to talk about 'Nice Guys', but not the fatherless homes they often come from?

Everyone likes to talk about 'Nice Guy' men, but rarely the single mother or paternally absent homes they often come from.

As though awkward dudes with difficulty cultivating attraction and the learned behaviour of people pleasing the women in the lives just spontaneously materialise out of the ether without rhyme or reason whatsoever.

Why is this?

I'm sure there are some of you out there who were raised in such homes and turned out fine etc, but we know empirically there's a lot of work connecting father absence to insecure attachment in children, and separately, insecure/anxious attachment in adults correlates well with certain behaviours;

Difficulty enforcing boundaries.
Treating affection as conditional.
Compulsive accommodation and people pleasing.
Resulting resentments from failure to have their needs met.

aka the exact behaviours the 'Nice Guy' cliche is known for.

So why is it okay to discuss the behavior, but never the developmental root?

The internet or random figures online will often be scapegoated, but it never answers the problem of why the men were having histories of relationship problems to be looking for solutions online to begin with.

I suppose I'm asking for my own benefit here too, as though I'm half a decade married now, I definitely struggled in finding my way romantically in my 20's because of those exact behaviors I myself picked up from my developmental home life. It took me time and ongoing effort to unlearn these things.

But in examining how I developed these things, it's got me asking why nobody actually wanted to help me or other dudes struggling now, like I did then, in being honest about how these types of homes can kind of fuck a guy up.

Having a genuine understanding of the "why" is the only real way to fix the "what.", so why do we obfuscate and scapegoat these matters?