They don't care. Bots are subscribers too and due to the sheer amount of them, taking action would cost them a ton of money. If it bothers you that much I would recommend quitting because they will never do anything about it. There are many cases of bots being reported daily by dozens of peoples for months and months and nothing being done.

People just do it openly and blatantly like in your video because they know there's nothing risky about it. Game has absolutely zero integrity.