One other complication from moving on from Facebook is that the solutions available don't really include longevity. The migration itself can detail a lot of work, and take a lot of time. To do this on a platform that will eventually burn out when the one or two developers working on it, have had their fill, just really doesn't help encourage the move. Mastodon is popular now, but not really, and who knows how long its development and support will last? Just saying.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!