> So if I need a certain level of quality, I have to verify the process of producing it
Precisely this, and this is hardly a unique to software requirement. Process audits are everywhere in engineering. Previously you could infer the process of producing some code by simply reading the patch and that generally would tell you quite a bit about the author itself. Using advanced and niche concepts with imply a solid process with experience backing it. Which would then imply that certain contextual bugs are unlikely so you skip looking for them.
My premise in the blog is basically that "Well now I have go do a full review no matter what the code itself tells me about the author."