The people who built the platforms you're using gave them to you and largely ban me from them. Nostr is an attempt to resist this.
I have time to think about building platforms AND think about who is giving who what, with what permissions. These topics matter and are worth time.
There are many people with guns stopping me from "taking control of a sovereign platform." Look up the FCC. You're sucking big tech dick for the people who use that tech to do censorship.