What people have problems with are the obvious Mary Sues, the angsty "woe is me" shits that keep cropping up in modern RPGs thanks to the millenial shits believing that crap. It is an extension of the millenial mentality that they are owed everything and when things don't turn out the way they want, they spit the dummy and go on a raging rampage of "revenge".
Millenials have little to do with it, or may have nothing to do with it
Let me explain.
When I was DMing in teh internetz, including forum games and chat games, I had to go through hundreds of player biographies. And I can easily tell you that this:
Due to her flawless, almost supernatural beauty, Valerie has been at the center of everyone's attention, even when she was still a child. Born into a noble Brevic family, the young girl soon became a shining star of high society. She quickly had to learn to resist the unwanted advances of her admirers, using cold arrogance and impeccable, distant manners as an impenetrable shield
sort of thing I had to turn down every day. She has flawless, supernatural beauty, she was a star of society, but she used her impeccable manners to distant herself from that terrible fate,
until she just said fuck it and went adventuring even.
or
Regongar had a rough start in life. A childhood and youth spent in the Technic League’s captivity has left a permanent mark, forever changing the half-orc. But while Octavia believes that his suffering has destroyed almost everything good in Regongar, he thinks otherwise. In the crucible of servitude the magus* steeled himself for future challenges, forged his iron will and deadly proficiencies which made the free Regongar a living nightmare for the Technic League and its agents.
He is a suffering person who suffered much but turned so badass.
Do you see where something is wrong here?
Because I can tell you what is wrong here.
This has nothing to do with millenials, or your tumblr, or anita sarkesian. As I said, I had to turn down these sort of characters or ask players to rework them to add some, you know,
FLAWS
into their personalities. And believe me, 13 year olds are not the only who roll characters like this. Far from it.
It's just well, a very "meh" roleplaying ability. Some players change and become better and roleplaying and their characters become more interesting. While some can forever write biographies with SAME TYPOS FOR TEN YEARS
"раса" пишется с одной "с" сукаблд and even have fun characters. And some players just write, you now.... like examples above. And don't even change.
Add to this the obvious fact that game developers quote themselves instead quoting anything better and we have an extra layer of problems which already pile up over our beloved recycling bin of fantasy genre.
Of course characters might end up ok in the game, I don't know that (although honestly I don't believe that many of them would, because my gut tells me this and through experience it usually ends up correct); I am just reacting to what we get for now, nothing more.