You guys also forget Yoshida's vision (which is expressed with housing for one.)

He wants an active, immersive, realistic world.
While AFKers being removed for queue is a thing now and possibly in expansion where its' required.

The reason it's not shamed on ourtside of congestion (aka everyone in this topic saying 'why would they do that' 'spooky'). Is because AFK people make it more realistic and immersive. What city doesn't have the local bum, street performers, loiterers, and crowds hanging out? Unless Limsa is a city that closes its doors at night, then there's probably the latenight crowds as well.
It makes the world more lively.