A banwave implies that the bot was detected.
What happens is that there's a new expansion out and old zones have people from multiple realms, so there's a ton of people out there. Couple that with the fact that flightor has sucked since it was redone 6 months ago (why fix something that isn't broken is beyond me), and now you don't even have to follow someone into a fight to tell if it's a bot or not, you just have to see them fly around for 30 seconds.
We're not detected, we're just way more noticeable, and in turn, reportable.
My 2c.