I have had the same thought for years. I guess their monopoly makes them able not to care about quality (and does not depend on it).

A big decision maker, before signing a big contract, will look at the budget and won't care about how good is the UX.

At some point I assume somebody had to explain why the start menu is 40-50 times slower than previous releases. Or they simply vibe-code something and ship it not caring what they created.