That’s willful ignorance. While the willfully ignorant can be stupid (lack of intelligence) more often it seems to be due to arrogance and/or just being an asshole in general

the end consumer always foots the bill.

Or the consumer can’t/won’t take on the extra burden of cost, and the business loses enough sales to go under.

I actually don’t consider this an issue of being dumb. It IS an issue with being under-educated (often deliberately in R states) and fed a ton of propaganda