Agreed. AI in general are plain stupid. The idea is great but their intelligence is pretty bad, probably set to 'Normal' difficulty which means you can walk away for 30 mins in a skirmish and they haven't taken out even one of your towers. They walk into range of 3+ enemy towers and melee until they are dead. WTH...
Had a teammate drop in 2v2 and ai got farmed so hard, he had 15+ deaths and no kills (of course). He can't push or defend and the other team ends up with easily 8k gold more than me, not even counting how much time he spent reviving.
Another winning streak down the drain thx to AI...