Since all notes are attached to a person's pubkey, won't long notes show up on all clients regardless of lengths. For example, if I post a 1000 word essay using habla.news, won't people following me see that post in the Damus app (for example). I suppose it depends on the relays one is publishing to...Maybe it would make more sense for a person to have a long form pubkey and a standard "social" pubkey. Just thinking out loud.