Conflict of interest that the author fails to mention: he's a QA manager at Amazon, and has a vested interest in QA being seen as a necessary role. It may well be, but this is definitely a conflict of interest.

Aside from that, this article is incredibly heavy on theory and very light on empirical fact. Its bibliography consists of a very narrow selection of blogs (4 of the articles he quotes are one and the same blog somehow), which talk about a very narrow subset of the industry. This article not referencing the serious and well-established research that has been done on the effectivity of dev-owned tests by for example the DORA folks, almost seems dishonest.

The clickbait title, when compared to the content of the article, is outright dishonest. The author theorizes about some warts dev-owned testing may have at some specific companies, but this is a very far cry from it failing in practice, especially when you compare them to the warts of offloading quality to a different team.

It's probably a bit harsh, but I feel like, as an industry, we should have a higher standard of empiricism when it comes to evaluating our ways of working.