So I googled "serious important films," and based on their summaries I will explain how each would be better if the main character was a lesbian https://twitter.com/BootlegGirl/status/1266414682862161927

Ok so this summary doesn't offer much detail but I've seen the movie. There's no reason the main character couldn't be a lesbian. Might the mob be prejudiced against her? Sure, but that can be worked around

Do I have to spell this one out? Rosebud was her childhood girlfriend and the sled was a beard

They could be about two women

Why a boy, and not a girl who is gay? I rest my case

The filmmaker, could be a woman, who is gay

Dave could be a woman and HAL could be SAL and they could have a tragic romance

But what if it's a woman, who is gay, taking a literal knife to class distinctions? Bet you never thought of that huh

This one is already subtextually gay so just flip the genders and make it canonical

Gonna let the cishets have this one

What if the samurai... were lesbians

(Yes, I know a major plot point important to the themes involves pregnancy. Maybe only most of them are lesbians )

What if the boat guy and the other boat guy... were both gay women

See Life is Strange (2015)

What if the gangsters were women, and also gay