i have grown some dank from schwag seeds.
its allllll about the tlc.
commercial growers might not have the best buds BUT
to keep the dealers selling there product they have to use good genetics, they just get sloppy on the grow.
we hobbyists grow small batches with lots of tlc and time invested in the grow...
commercial growers care more about volume over quality, in other words its simple to get dank buds growing in a room or small outdoor setup but not so easy when your going commercial and tending acre sized tracts of plants... so you lose quality to get the cheap shit.
i honestly dont beleive there are many 'shitty strains' out there at all, some are more potent than others, some yield better, and some autoflower; but then again if you were a grower would you say 'lets get rid off the good seeds and just grow the nasty stuff...' ? no, cause nobody would buy it! they just dont give a damn about the final product because there all about volume