kicking people for being AFK is not the answer, it's just a short term solution. I can honestly say that while playing the past 2 days, i haven't seen that many AFK people personally.
What if you have to eat dinner, take care of kids....
What if you have to do something for half an hour and come back to find out you have to wait to log back in again?

If they implement this forced booting due to being AFK, what next? Kicking people for being logged in and playing for 20 hours straight? Why should someone be allowed to play for 20 straight hours while there are people who just want to play for 1-2 hours?