I've been working in the commercial side of the industry now for about 2 months and I already have more insight and knowledge into the sick side of the industry than even I care to shake a stick at. Want to get really pissed off? Look at the requirements for testing for contaminants for buds being sold for dispensary use and/or blasting into extraction. You can remediate moldy, shitty weed to the point where it will pass an inspection, then blast it off for sale to dispensaries (med and rec.) Certain states have more loose requirements on which contaminants they test for. The sample sizes are TINY too compared to the volume of bud required by weight (like fucking minuscule.)
THC testing? What a joke. The variance allowance in testing, on tops of no standardized methods for testing, put THC levels ALLLLLLLLLLL over the map. HUGE variance allowances on clone-only, "fuck you autoflower growers, photos are king" strains

. I tell those old celebrity breeders they can SUCK it man, they've fed us a load of bullshit for years based on testing they don't even (or maybe even do) comprehend themselves.
18-28% THC on some of my photoperiod bud from the dispensary. As a consumer purchasing seeds based on what you've heard on THC content, what are you more willing to purchase? 18% Or 28%?
Marketing. BS.