I do run this type of setup for my ball python and will likely set it up for the garters. He seems very happy with it, more than he was with both paper towels and cocofiber, and is still very healthy. I certainly do mess with it and check on it plenty and spot clean and make sure the insects are properly cleaning the rest. But regardless, that actually wasn't my point at all. Whether bioactive is good or bad is a different debate.
My point was that representing uncleaned cocofiber or wood chip as being what people support when they support bioactive setups benefits no one, including the snakes, as it gives the false impression that there is a group of people out there supporting using just whatever substrate and not cleaning it. Representing that as something that there is an argument for at all does everyone a disservice.
On an unrelated note to the bioactive issue, I would point out that snakes do also ingest everything that is undigested in their prey's stomach as well as all the partially digested stuff in the intestines. They do therefore naturally eat a pretty small percentage of plant matter, seeds, nuts, insects, etc.
It does bother me when my garter snakes get cocofiber in their mouth, even though it doesn't seem to bother them and they prove constantly that it is not obstructing their gut. It honestly wouldn't bother me much if they got dirt in their mouths though because a large part of their (for the species I have and many others) natural diet is worms. Worms have dirt in their gut and lots of it.