Without knowing the specific details in this case, one of the biggest problem in multiplayer games - even very popular games - is filling the matchmaking pools

Without knowing the specific details in this case, one of the biggest problem in multiplayer games - even very popular games - is filling the matchmaking pools with players of a similar skill set and region (low ping) to you. My guess is that even though it doesn’t show you queueing, that’s just some entertainment to fill time - the server is actually scheduling games to maximise player counts.