I don't get why whole developer circles didn't leave the platform yet. You can't ask people something via DMs without paying for the blue checkmark and it's totally unhelpful, plus it sends the message you care not enough about the right wing messaging that is send by the platform now. Or these people are just ok with that, I don't know.
They have. Lots and lots of developers are now on the Fediverse. But there's a cultural schism between the types of developers that frequent Silicon Valley cafes and the ones that frequent the Chaos Computer Club.
It's not network effect. There is nothing valuable that happens on twitter that doesn't make it's way out of twitter to the rest of the internet and reality. Avoiding twitter is actually a great way to filter out literal nation-state produced misinfo and propaganda that doesn't pass the smell test, but seems rampant on twitter.
People are addicted to twitter because of FOMO, because god forbid they learn about breaking news an hour later than anyone else.