the problem with RMT is they are always trying to bypass filters in place (like right now relying on compounded sentences and Cyrillic alphabet), that being said they are doing things to stop it but they also have to be careful in dealing with this. yes the RMT spammers are bots. but that miner over there running to each node and hitting it with an frowny face icon? he could be a bot or he could be just a dedicated miner. We wouldn't let SE hear the end of it if they got an innocent person banned by mistake because someone else thought they were a bot.