If the devs cared this much about keeping our accounts safe they would change that note to "WARNING: using gatherbuddy for more than a couple hours per day will result in a 99.99% chance of ban".

but that would lower sales, so it's not happening.
It's gatherbuddy that's causing the vast majority of account loss, not some detection code in the client.
that being said, these complaint threads are certainly dumb. need to wait 3 days or so before really freaking out. even wow doesn't have 99.99% uptime.