I've been "rodeoin'" a long time, about 40 years to be exact. I hunt the same type terrain as I did 40 years ago, last 25 the same properties. The deer's noses were the same back then as they are now. I'm sure I know the animal much better now than say 25-30 years ago, but I sure don't think that's the only reason I "get busted" much less now. I do understand thermals and light air versus heavy air and our 3D mountain wind much better as of late. However, I'm convinced getting detected by deer less now, for the most part, is a direct result of my scent control efforts.
Whether some of what I do doesn't work and is not worth the effort, don't know, maybe, maybe not. What little scent control I do in total works, and doesn't break the bank, so I'll go on business as usual. My taxidermist sure as heck wouldn't want me to make any changes.