Shills are here for one main reason, to cause strife. Some are human, some are bots. Neither care about what we believe or are interested in a cognizant argument.
Their sole purpose is to create conflict within the bread. Responding to them only increases this. They are here and there is not much we can do about it.
Just think of it as the same as responding to an annoying commercial on TV. It won't change anything, and you know it's just going to play again at the next break. So best just to mute it and ignore.