you are just covering the obvious cases of scam bots. there are more sophisticated ones that don't need to rob you to rob you!

for example a while ago there was a bot that was being sold to people with the promise of huge returns and a lot of fake stats. the owner simply made money by fooling people into buying his useless bot while the bot wasn't doing anything malicious, it was just useless because it failed the moment bitcoin price went up (keep in mind this was during the downtrend).