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.
Same. Googled “Reddit alternatives” on the first day of the blackout and just signed up to 4 or 5 to try. Lemmy and Kbin were two.