For me at least, getting onto @Mastodon and appreciating the structure of the platform and the tone of conversation has made these other pop-up social networks (Twitter replacements) totally unattractive. No, I don’t want to move up on a wait list by “referring 5 friends”; no, I don’t want to be part of another Jack Dorsey project; no, I don’t want to be part of something with weird completely top-down control. Mastodon broke me for other platforms.
A relevant wider point, eloquently expressed by @mmasnick:
“[T]here’s a lot of fun and interesting development going on none of which relies on a big centralized, VC backed social media company. While those are rushing in to try to fill the void… I’m kinda wondering why would anyone invest in building up a social graph and content on one of those?”