Nostr is cool and important, but let's not pretend it can simply replace Twitter outright. Scaling is a real issue.
Discussion
It is far from it. But it is a good start of something that has a real potential to be a good free speech platform. I do not think decentralized systems will ever fully replace any centralized system but I do think they can grow to a good percentage to capture a good slice of the market and always be present as an alternative for tyranny.