I love the way they make "freely switching talents would enable player to pick the best ones all the time" sound like it's a bad thing lol
I thought that was the whole point of having fucking talents in the first place
Particularly when the warlock talents are specifically designed so that to perform one role effectively you automatically perform another badly. Warlocks, particularly affliction and destruction, have to give up a hell of a lot of single target to do proper aoe (and vice versa).
If that was part of a sensible "strength and weakness" map and applied to all classes, it wouldn't be an issue. But of course it is not. You got god-classes able to aoe and single target effectively.
Which means in pug groups they are the automatic preferred choice. Why bother to take an afflock, yeah great on aoe but that's all he can do, he will be absolute garbage on the bosses, cleaving, bursting anything down etc. Just take a mage with Living Bomb who will also be able to do way way better boss damage. Mind you that is true even if the afflock takes single target talents anyway, the pitiful few you see around don;t even bother.