I am absolutely against it... So, it turns out, it's the opponent's turn, they go to the toilet/store/make a phone call, etc.... And then they attack you during their turn... and you lose due to the timer. It's nonsense.
P.S. I have never encountered (or been accused of) deliberately wasting time in Facebook games. But if you get upset when your opponent spends 2 minutes thinking about each unit's move, then you should calm down... Or play Starcraft.
I completely agree!
If it bothers you that much, it's better to change opponents rather than the timer.