Lemmy isn't THE reddit alternative for me. In fact, I don't think there can be a single reddit alternative that can fill reddit's shoes. This whole debacle was a reminder to diversify and try out different platforms.
Coming to reddit from digg, I found that I still visited slashdot after the move. Reddit's had previous issues that has prompted people to try to migrate to other sites over the years. I joined Tildes a few years back, and before that, I was on Voat until it became clear that it was a cesspool. I also lurk occasionally on Raddle.
This migration attempt, I picked up Lemmy, and I might try a couple of other sites like Squabble. I gave up using reddit on my phone, but I still use old.reddit.com when I'm on a computer. And I still lurk on slashdot after all these years.
Having used the web before any of these sites existed, I've found that what's past is prologue. There is no one size fits all, but rather a plethora of sites that host various communities.