I don't remember. First of all, I knew about fediverse thanks to Elon Musk, when he decided to buy Twitter on April last year. So, I went to Mastodon (my first instance was a tankie one, by the way, and I didn't notice it on first sight). Afterwards, I was learning more about fediverse services, like Pixelfed, PeerTube, Lemmy and others. So, I've a Lemmy user since the 28th of April, 2022. But I've also a kbin.social user since yesterday.
I think these reddit news had nothing to do with my decision to create an user on Lemmy. But they do have everything to do with my decision to be more active here.