Bluesky adds 700,000 new users in a week / A ‘majority' of the new users are from the US, indicating that people are searching for a new platform as an alternative to X.
I use both Mastodon and BlueSky and I don't really care for platforms like Twitter. Both Mastodon and BlueSky are good in their own ways but I think BlueSky is user friendly. Easy to setup looks super similar to Twitter, easier to navigate.
Plus, I have heard about it pretty much everywhere. It is commonly compared to Threads. I only know and heard about Mastodon on Lemmy.