We know that it is run by the same assholes. Bluesky is VC backed and Twitter was also. There is no way that Bluesky won’t go the same route as every other VC backed social network. Sometime in the future they will start to meddle with your feed to push ads and sell your data to everyone.
Lemmy is the first reddit alternative that wasn’t setup by neonazis after they were banned on reddit and therefore Lemmy had the chance to get a userbase that is not made of neonazis. And that gives Lemmy the ability to grow, as most people really don’t want to use a forum full of neonazis