You can not honestly assume that they have no way to detect the bot after this second banwave, which also appears to be way bigger than the last one. What do you think? That they just "assume" someone is botting, and they accidentally hit the right people (=botters)? like thousands and thousand of them for the second time in 7 months? Come one, lol. Of course they have a way to detect the bot, they already had a way to detect it with the first banwave in May. They probably even know how to detect the bot for way longer than that.