Feeder bots on HUMAN team in 3v3 coop vs ai?

I think there are some ai controlled players queueing up in 3v3 Coop AI Intermediate bot games. I've noticed it in too many games for it to be a coincidence. Moreover, they all have the same username pattern: "Name XX Name", this isn't an actual name but as an example: Stephen IL Jack. They all do the same thing in game - they play brainlessly and feed. Their AI is worse than that of beginner bots and they are generally useless. In fact, it would be easier to win without them because they feed the enemy bots and usually have scores like 0/15 and 0/20. A beginner Yi bot could solo 3 of those guys easily, and I'm not exaggerating. I can provide some screenshots if necessary.

My theory is that some people created a shitty version of the AI to queue up, play the game and possibly get carried by others, thus leveling up the account without any effort at all.