The white rhino cut I’ve been running the past year really surprised me. I did a pheno hunt with 50 seeds and picked a keeper. The yield and bag appeal didn’t surprise me. I was pleasantly surprised by the potency, and blown away with how much smell I can get out of her.I do like to see a good frosting. It might not be the ultimate guide to potency. It has certainly been wrong at times. Overall though, it's not a bad indication of how strong something is going to be. Lots of people want that bag appeal, to make more sales. It's an established idea, whether we like it or not.
If someone messes up, or chops early, the chances of having a good frost are certainly lower. So at a glance, I will have lower expectations of weed without a good covering.
I don't doubt that a well frosted weed can have little effect. Hemp flowers offer solid proof of this. I would still have to smoke a lot to really accept it though. It's just expectations though, not clear science. On average, more frost is a good thing.
A few years back, white strains were popular. It seemed to start with the widow. The rhino was popular to. They had commercial value, but whatever the white bit was, did seem rather poor imo. Lots of frost, but a weak sour milk taste, and a hit that was never making it much past 6pm.
I'm sure the states got them to, but perhaps with different names.