Huge difference between me saying manufacturers will cut corners in any way they can (maybe you're taking this as consumer vs manufacterer?) and the person who replied to me saying I don't work a job that encounters "real" (read intentionally vague and diminutive) QC standars. One is a blanket statement that is backed by easily accessed and very public evidence, the other is personal attack.
I'm not sure how it's a personal attack, it would be like someone who bakes bread for a living saying that the tolerance of products doesn't really matter, compared with a machinist who knows exactly how much it can matter. It's quantifiably true that serious QA is a thing, your industry just doesn't have it. If you choose to turn that into a personal attack I think that says more about your internal state than it does about the actual post I made.
Please do not conflate the two.