Windows RTMs used to be shipped in a usable state (albeit buggy) for more than a decade. You installed it from a CD and it worked fine, you installed patches every once in a while from a random Service Pack CD you got from somewhere.
Modern Windows has had the habit of being so buggy after release in such horrendous ways that I can't imagine being able to use the same install CD for years. This is definitely putting less attention to detail in my view.
The slice of Microsoft stuff I worked at certainly did not have dedicated QA at the time I was there and used to have a QA team before, so there is some degree of truth to the statement. I can't speak for other Microsoft teams and offices. It was very disappointing for me, because I have had the opportunity to work with great QA staff before and in my current job and there is no way a developer dedicating 25 % of their time (which is what was suggested as a replacement for having dedicated QA) can do a job anywhere near as good.
I have a feeling most commenters (not just here) don't really know what Falcon is and does, if EDR (and more?) keeps getting compared to a plain antivirus.
