Isn't picts-rs just something that runs on one server and just handles converting and resizing images? The new remote media storage stuff could run that, but the point is to allow more centralised servers so not every instance needs to individually store, process and transmit media.
Not just media, things like searching the Fediverse can be handled by a dedicated server, shared (or not) by multiple servers. Also spam detection, link preview generation, etc.

He's definitely not the landlord, but perhaps he's in the 24th century version of Occupy Wall Street - Occupy Starfleet.