If my contacts want to meet at the bar that used to be fun, but is now full of racists and nazis instead of just have one or two wander in occasionall before getting kicked out, they can meet there without me.
If i had to guess, habit.
If someone's used to doing something everyday they're gonna trend towards repeating what's already engrained into their routine because the familiar shit-show is still more comfortable than the unfamiliar but more enjoyable platforms/habits, whatever they may be
It doesn't matter how good the new platforms are if the people you follow aren't there. I do all my posting on Mastodon now but when it comes to people I follow on Twitter virtually none of them have moved their stuff over so I run out of interesting things to check out quickly
People here are just gonna tell you to leave (I have done so myself) but if you can't for whatever reason something that can help is an extension like Blue Blocker which automatically blocks (or you can set it to mute) blue check marks as you encounter them. That way you don't give them money for their horrible baits. While I was at Twitter waiting until the people I followed shared their new socials (sadly most went to BlueSky instead of Mastodon so I lost them anyway) I used Blue Blocker in that manner. You can set exceptions for certain accounts tho I didn't, it mercilessly nuked all checkmarks from my Fred and reveales the bare Twitter behind. The result was somewhat like old Twitter at first but eventually it does get kinda slow as most of the valuable accounts become inactive. On the bright side that made leaving so much easier, so if you want to leave but need a motivator there's one that might help you.
People here are just gonna tell you to leave (I have done so myself) but if you can't for whatever reason something that can help is an extension like Blue Blocker which automatically blocks (or you can set it to mute) blue check marks as you encounter them. That way you don't give them money for their horrible baits. While I was at Twitter waiting until the people I followed shared their new socials (sadly most went to BlueSky instead of Mastodon so I lost them anyway) I used Blue Blocker in that manner. You can set exceptions for certain accounts tho I didn't, it mercilessly muted all checkmarks from my feed and revealed the bare Twitter behind. The result was somewhat like old Twitter at first but eventually it does get kinda slow as most of the valuable accounts become inactive. On the bright side that made leaving so much easier, so if you want to leave but need a motivator there's one that might help you.