Global feed is a scam. it doesn't really exist, and attempts to create one will invariably backfire.
Local feeds -- from trusted safe relays -- are the correct answer (I think).
See https://bountsr.org/design/2023/01/26/relay-based-design.html
Discussion
Also #[0] from https://github.com/kaiwolfram/Nozzle has showed interest in implementing some of the ideas on that bounty description. We'll see.
Sent a dm