Meh - Microsoft can point to the fact that they saved the day by preventing every Linux device from getting backdoored with the `xz-utils` debacle. The fact that it was caught was an exceedingly lucky break, and had nothing to do with quality engineering, or even that the code was open source.
(Edit for the downvoters - nothing I said above was an opinion. https://news.ycombinator.com/item?id=41049312)