Oddbean new post about | logout
 It feels like some of the bootstrapping logic could be offloaded to extensions. 
Relay hints should be immediately available to you the moment you follow a profile. If those information are kept in your login extension and available to any client this would boost the bootstrapping process.
For custom feed, they are "custodian" feeds and pushed to you by the clients, so the relay hints is not the extension responsibility anymore.