this bot has been running for like what? 6 years?
it's probably not possible for blizzard to catch casual botters
if there way a way to detect the actual bot, they would have fixed it
it's also possible they can actually detect it but just don't care
the only way to get banned, as far as I've seen so far on this forum,
is if you let your bot run for too long or make it too obvious you're botting