Perhaps, but before everyone disappeared there were plenty of "goodbye, cruel world" type posts. I think some of it is just that people saw the whole thing didn't implode and either got back to using it and/or didn't like the alternatives much.

Personally have been splitting time between Twitter & Mastodon, although using Twitter more. Mastodon has a higher percentage of my high quality follows but a lot of them either dont post much there or are crossposting to Twitter anyways. And I prefer Twitter the application a heckuva lot more than Mastodon.