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.
I had used mastodon, akkoma and peertube before learning about Lenny when the Reddit stuff happened. I have never had an account on twitter and rarely used my Reddit account.