I still dont think it is cheating, more valve being stupid. Afterall if bots can rack up achievements on valve sync'd servers then go for it - why on earth they havent closed that loophole since the first medic unlocks is beyond me.
Its not hard to set up a "back to the cabinet" array of soldier bots. Then simply "attack1" with your pipe launcher. Dishonest yes but not cheating.
I must reiterate that I am still against this crap but valve should have fixed their damn bugs before give shit like hats.
Its not the cough that carries you off but the coffin they carry you off in.