This is a tricky one. Bots provide competition and a return for investors on one hand, but discourage real players on another and therefore an uptake from new users. I moved from manual play to using some bot accounts to get a return on investment after playing multiple accounts manually for a longtime. I can't really see how they can ban bot accounts without some sort of captcha or manual recognition element being implemented. I am guessing the rewards in Modern should benefit with the reduction of users in this format.