A lot of people try and deflect from Bluesky's governance issues by pointing at the fact that you _could_, in theory, self-host it or use another instance to bypass it. In practice though, that's something almost nobody does (unlike with the fediverse), which allows the company behind it to make decisions like this for effectively everyone with no checks whatsoever.
Honestly, I'd like to chime in the fact that I always used to think that web was so just aws,google,microsoft,cloudflare hosting it and there is some truth to it but if someone feels this way, I recommend people to look at some websites like https://serverdeals.cc https://https://vpspricetracker.com/ etc and going on places like lowendtalk and even talking to some people who are vps providers and talking to them etc, it was very fascinating
Another point I'd like to chime in, being more relevant perhaps is that as I have told in other comment, bluesky itself isnt centralizing/asking for id to just use it but they are asking it for the dm functionality which is still centralized/ even unencrypted. They are working on improving it/making it decentralized but although I feel like I dont enjoy bluesky that much because of its shannon index as you showed compared to say fediverse, this message today isnt the issue
Fediverse itself doesnt know how to handle direct messages / most likely they are unencrypted too (atleast of lemmy they are that I know of)
But I am interested how the shannon index of fediverse is so low when threads app has 10s of millions of people, how does that work/not centralized too?
Also I had heard that the creator of pixelfed is working on an encrypted fediverse messaging app but I have been interested in this for so long but I am interested if you know of any such applications right now
I can follow Hank Green on Threads but the interoperability basically ends there.