I sincerely doubt they're banning "pro-palestine" subs and users and are banning the ones supporting Hamas and mindless violence. Reddit is far more anti-zionist than any other social media, for example.

Not to say that the Israeli propaganda machine isn't running, but there is definitely a portion of antisemitic backing for Hamas (not Palestine) that's going to get places banned for not following reddit's sitewide rules about hate (just have to use some dogwhistles to get around it tho).