I think that girls are no more immune to the messages they get around sex etc.
How women are often presented or present themselves that way on social media etc impacts how girls look at the world as well as boys. Same with seeing porn.
Both sexes learn (blanket statements follow!) that it's very important for girls to have certain types of bodies, presentation of those bodies, hair, makeup etc. From porn they both learn that the male role is to be dominant and the female role is to give him what he wants.
Both sexes learn to view women and girls though the male gaze. It's iniquitous so how can they not?
Also of course there's all the things to navigate- dating, first sexual experiences, both sexes often talk up what they know or have done to appear more worldly. Boys have their sex check list and coerce to tick stuff off as they have always done. Girls and boys are both very very interested and inquisitive about sex, this thing that is new to them.
So both girls and boys consume male gaze and learn to see the women in porn as objects same as boys do. Also it's normal to want to try what you have seen.
As ever the issues are that porn is highly unrealistic in many ways. The messages in modern het porn are very grim. Things that used to be niche are now vanilla. How to do more difficult stuff without pain etc is not shown in porn, or that if you really want to do something it might take a long time (weeks/ months) to build up to it. That for boys the risk is far far lower.. For girls is risk of pain, injury, higher risk of STD, risk of pregnancy and then there's the psychological stuff and the way many boys treat girls (frigid/ slag).
The dynamics of young het sex I doubt have changed much but the pressure, lack of really knowing much past porn, focus on male pleasure and dominance and women as receptacles... That is different.
In short it's a total shitshow. And in the end it all benefits heterosexual men and boys.