AFK Players the entire match

I am noticing this more and more, especially on Escalation, that multiple players will be AFK in the spawn the entire match. I tried it, and sure enough 12+ minutes later, I am standing in the spawn, still alive. 

There seems to be a difference between the AFK period at the start of a match and after a respawn.

It's also noticeable because half the time no more than 10-12 teammates are actually on the map actively playing. Most of the time, that is the actual deciding factor, not that your team or the other team are playing better; one side just has way more active players.

Anyone else notice this? 5-10 mins in, open the map and see how many teammates are on the map. I rarely see more than high teens with 32 players and 10 or so with 24 players.