I've been botting on WoW for years. As far as i can tell you. If you don't bot all the days, if you bot for like 10 hours then stop etc.. run different schedules you prolly won't get ban.
If you're too greedy and start botting too much you'll get banhammer over you instant. That it. Being too greedy ends up with a ban.
Diablo isn't wow.. yeah but they both rule over the same company. I'm sure my way to bot isn't bad at all. But if you prefer claiming it doesn't matter if you abuse botting or not then you're wrong.