Before you complain about the bots there is one thing to realize: The bots get better as you get better AND as the need to help you increases.
About enemy AI:
Yes, when you are low level, the enemy AI is stupid. You will kill them without any problem and finish missions pretty easily. Then as you gain levels and unlock abilities you'll notice that you start failing missions and the enemy AI will murder you. OVER. AND OVER. And they will continue to do it without mercy and in new curbstomping ways each match. The enemy AI in this game, at higher levels, is out of control hard. And I love it. A 1v1 shootout against the AI at higher levels is scary and will always keep you on your toes. You're lucky if you come out with 1/2 health. 1v2 and you just better run or pray help comes soon. Its an awesome challenge and makes me keep coming back to this game.
About friendly AI:
-they hold back and wait for you to do the objective, even say for example a bot soldier is at the objective he will not complete it in the first few minutes.
-they get more intelligent and aggressive as the time ticks down and they realise your aren't going to get the object done
-they act more intelligent when there are more humans on the opposite team.
TLDR: People complaining about AI being stupid need to actually play the game. Its meant to hold your hand at the beginning, then as you get better, it assumes you can deal with harder, murder, psycho bots and gives you less help on your side to actually make the game challenging. Games haven't been a challenge in a long time. This is a breath of fresh air.