Now, there are single sign-on (SSO) possibilities, but for them to be universally accessible across the Fediverse, you either need to impose them on 20,000 admins across two dozen software implementations, or you need them all to a) agree to support SSO, and b) agree to support the same SSO options.
Yeah, this is the real crux of the issue and is a large unsolved problem. We simply have no standardized system for decentralized identity verification.
SSO works as a way of maintaining identity across the fediverse, but that's not really federating identity so much as it's getting all instance to offload identity verification to various central services.
I believe I heard Microsoft had a research project in the area of decentralized identity verification but I don't know if it went anywhere or how suitable it would be.
Lmao at you complaining about toxicity when you're toxically judging and gatekeeping 2 Billion people.