Fortunately they still allow you to actually play the game. If their is any time that you should even "refuse" to bot it is when an xpac launches.
Perhaps it's just me, but I like to actually be good at the games I play and with new abilities and rotations among a ton of other things, your doing no one a favor by botting off the rip.
Of course I assume your one of the guys who skips raids if the bot is down. If that's the case this will fall on deaf ears anyhow.
Apart from the RMT guys who destroy the genre for personal gain, the only other botters are guys like me. Who after leveling dozens of toons by hand, or farming my 10,000,000th lotus for flasks, I concede.
If that's the case the bot won't help at for a bit anyhow as others have said. You won't have meshes or profiles or anything of that nature for the new content.
Then again, blizzard now sanctions power leveling via their own company so who am I to try to stay morally correct lol.