Why would you like to federate something that has practiced a “single/minimal domain fits all” ? (ads, scripts, media, trackers, etc. in a single fucking domain), that’ll most likely to stress your instance/server and bandwidth since you cant segregate the stuff you only need. I know activitypubs runs differently but if they managed to put thier style of “single domain fits all” (its only a matter of time) then they could just easily inject thier stuff (ads, trackers or whatever the fuck they have) on your instance making your instance thier side bitch

¯_(ツ)_/¯