i think mcu steve is extremely idealized.

first, he becomes a super human, and apparently all his disabilities and medical problems disappear. which is honestly not a good message to actual disabled people, imo.

second, his backstory is mostly mentioned. we don't see a lot from steve's childhood or anything on screen. i think they detail it more in the comics, the same way they do for tony's childhood, but the fact that it's almost absent from the movies is a problem. they only mention his mother's name as far as i remember. nothing else. (please correct me if i'm wrong, of course)

mcu steve doesn't feel like a flawed character that has to change, the same way others are, like tony. mcu tony is clearly a flawed human being with several issues and a traumatic childhood (even if the mcu tries to paint howard in a good light, it still explains why tony deals with so much self-hatred and relies on unhealthy coping mechanisms, such as drinking). we don't see steve developing as a character. they might joke in that one scene of endgame where present steve rolls his eyes at past steve, but honestly? to me they feel like the same character. steve never changes. even when he's clearly wrong, the narrative insists that he's right.

steve betrays tony and gives him a half-assed "apology" letter. steve does not mourn sam and bucky at all in endgame, instead focusing on that one girl he kissed ONCE. and steve not only abandoned bucky, he took away peggy's agency and her happy ending. she already had a loving husband and children. not to mention the implications here. steve went back to a very flawed and bigoted period of time, and it's implied that he did not try to intervene in tragedies such as bucky being turned into the winter soldier, or tony's parents tragically dying. steve just stayed home. why couldn't he fucking do that in the present? he could've retired without changing someone else's life for his own gain.

it doesn't make SENSE. the winter soldier was a great film and it showed steve that he has to move on from the past and do what he can in the present. but no, steve never leaves the past behind, he literally goes back to it. and even then, it's all about peggy. it's not about his family. nor his mother, sarah, who's probably the person who inspires steve the most. but where the fuck is she? why does she only get ONE mention?

and by the way, i used to love steve. the first avenger and the winter soldier are still solid movies to me. that's why his ending sucks ass. and i've seen many steve fans who agree with me. he's such an important character in the marvel universe, and perhaps a lot more enjoyable and human in other media (like comics and cartoons). mcu steve is... nothing. he's just a walking propaganda for hypermasculinity.