There have been a LOT of major moves in UI improvement across all the major clients. Damus is making moves to go cross platform soon, Primal 2.0 came out, Amethyst dropped a major release, and I'm just seeing that Coracle has added a lot more user friendliness with feeds as well.

Also, Bitcoin reaching all time highs doesn't exactly hurt the uptake. Not sure if you've noticed, but a good few of us here are into Bitcoin ;-). And on legacy social platforms, #Bitcoin and #Nostr tend to go hand in hand, so if you're searching for the one, you'll find the other.