It is because it is a balance thing.
What is more important:
A) Kicking so thousands of people can log in when they get home with minimal delay.
or
B) Leaving it is as because we don't want to inconvience some DPS players.
It's annoying, it's a band-aid, but it is ultimately our fault for abusing an exploit (And by we I mean the community at large). I imagine it will be gone and done with in a few weeks backed by a patch to boot or ban AFK exploiters.
