Before the whole Reddit migration I was passively aware of the Fediverse, I thought I somewhat grasped the concept, and had created a Mastodon account, but never really used it.
But once the migration started, I decided to try out Kbin, and really liked it, and even started to use Mastodon more often.
Pretty familiar. I first learned about the fediverse when I joined Mastodon. I kept it at arms length as just a curiosity until Elon bought Twitter last year, when I switched to Mastodon full time. Since then I joined Pixelfed, Lemmy, Kbin, and checked out Calckey.