@evan i mean its one of those "why do anything?" things to me
if i was going to, say, try and influence mainstream trans rights discourse then the place for that is X as that's where the media and politicians and pressure groups post. and there would be very little point in doing it on fedi as those people are not on here
if i was going to try and build a community around something related to open source technology i'd do it on fedi as thats where the community for that is
a lot of artists tell me theyd love to be on fedi but have to be on instagram for career reasons (thats where all the galleries / curators / fans gather) and cant be doing with being in more than one place
i think everyone just goes where they think the most receptive audience is for their work and fedi is only that for a precious few things
i think most people would rather not have to use social media at all lol