See 0 guilds recruiting, trade chat during peak hours is dead, major cities empty, what happened? did every single person move over to frostmourne? is that the only option if you want to raid on oceania nowadays?
not neccisarily, Alliance is big on Fmourne for PVP/PVE,
and horde is big on Barth for PVE/PVP its just most teams are currently set.
Towards the end of the tier and start of next is when it usually picks up with recruitment spam.
also make sure you have 5. (services chat) enabled,
as that is where most recruitment gets done these days for everything.