Same, I lost interest in it when it had my attention. Yes, I'm aware I can consume BlueSky in other apps. I've largely moved away from participatory social media apps after Twitter's demise. I am starting to see more activity on my Threads app pick up which wasn't there initially...so far the feed is fairly reasonable and the addition of voice-clips is intriguing.

Better wait until it's federated, because it'll likely change a lot in meantime. Why bother getting used to an unstable WIP with uncertain future?

It was important to get in early on Twitter, it was centralized so people wanted to squat usernames, but Bluesky is decentralized so that's not a thing. I bet most people who beg for Bluesky invites just resell them, as accounts are otherwise completely worthless as soon as beta is over and federation rolls out.