Detectors of any sort can only flag expected variations from expected norms. AIs’ goals are to be undetectable with continuing improvements. Detectors help them do this by flagging failures. This is the same way antibiotic resistant bacteria evolve (well, it’s similar).
I don’t need the ultra features. I didn’t even need the pro features. I bought Sync pro for Reddit as a “thank you” to the author. A subscription is a bit different. I would be more willing to spend a couple bucks on each feature release than a subscription.