As I said it was just a story and I was stating my feelings. Yours was a rant. But whatever.
I don't believe the guy had done much fly fishing. It has mostly been fly anglers advocating rotational angling and it is a system developed by Fly Anglers in the Maritimes. I've also done a lot of bait & gear fishing as well as fly angling and yeah fish will swallow a fly deeply but infrequently relative to bait. Drifted bait is least likely than another form of bait fishing I am experienced with to be taken deeply perhaps less frequently then some forms of fly angling. C&R mortality studies bear this out.