" Also presumably, there would be plenty of "humans" patrolling this
category. Truly non compliant images would still get tagged."
Thats the problem. I would presume the opposite, in fact, and thats why
we've got bots to begin with.
In order to argue that the bot is doing something wrong (the bot itself, not
Betacommand) you need to point out where it is not obeying policy. If you
look at WP:AN/Betacommand, you'll note that there is no (and has never been
a) consensus that BCBot stop operating. The fact is that it is obeying
policy, so your next step is to *change the policy.* This can be done, by
consensus, and is by far a better approach than attacking a bot that is
enforcing the letter of current policy.
Betacommand, on the other hand, may not have the communication style best
suited to the bot operator. I won't ding him for getting pissed off, I
would, but someone a little more communicative and verbally dexterous might
have an easier job of it.