I agree and I tried to do it, the only solution i found thanks to their speed of posting and amount of posts is creating another bot that automatically flags content of users tagged on it as bots.
Ps: I do think that what wang is doing is good but having a pissload of bots is not a good thing.
What he is doing could easily be provided via a welcome page. It's flat out spam. Spam is inevitable but letting a bot get away with it is BS. https://steemit.com/trolls/@madhatting/troll-bots-not-cool
he has been a good introduction to the platform for some users, but at what potential cost? an infestation of bots can't be good