I keep seeing the echo chamber thing but at this point most social media sites are. Bluesky is just a left leaning one, which is the only thing that really sets it apart.

I mean honestly I think left leaning is basically being neutral and accepting scientific consensus. To me the non federated part of bluesky is kind of what makes me consider it a time bomb. Even if it were good now, we already know one owner switch, hostile takeover, threats from the government etc... can flip a network around faster than you can blink. It's why I literally see federation as the only way forward for the internet, and find it so ridiculous that everyone bolted to bluesky to escape twitters crash instead of mastadon. It's the same key problem. it can go down in moments.