Never forget the number of raiders who were banned early on with that one particular bot, the crying on the forums that they "didn't do anything!", and demanding their characters back because their raid was starting.
That particular bot does a LOT more than automate herb gathering and skinning. It automates play for raiders, and PvP. It's cheating. You can rationalize it all you want, but I suspect a large segment of the community is playing WAY over their skill level thanks to bots - and running to forums to sneer at "newbs" who didn't use rotation bots in Mythic and raids to get their gear and achievements.
It doesn't effect the game? Yes it does, when PvP is riddled with it and legit players lose to them, especially in ranked play, and then cheat their way to rewards and fill up guild slots and block players who actually play the game, and have some skill at it. (And don't bother with the "3 button talent hurrrrrrr nonsense)