I find it ridiculous that so many people immediately assume that just because someone is posting about problems in a discussion forum (you know, to discuss them) that they haven't already posted in the Feedback app. Some of these bugs have been reported months ago, with hundreds of upvotes, with no improvement whatsoever.
Herein lies the real problem. The majority of them have already BEEN fired. One of Nadella's first big moves was to drastically downscale QA and testing departments in favor of the actual programmers who are working on it doing their own testing. It's one of those financial things that looks good on paper but we're suffering through the downside of it now. It leads to internal biases ('nobody will use that feature that way!') and potential time management issues (how much time do you spend on testing vs programming?), not to mention that testing and development are two different skillsets in the first place.
Sure, now Microsoft has a lot more external users (Windows Insiders) testing, but we don't have access to the same kinds of toolsets that an internal tester might have, besides the problem of a drastically lower signal to noise ratio that the Feedback app exhibits (in comparison to internal testing).