I think a dead-giveaway is the realisation that issues that come with Microsoft-specific software, is met with an increasing amount of complaints by end users. Thus, either we buy into the PR explanation by Microsoft, or we rely on what end users says. Now there is a question how accurate the end users are, but the amount of complaints is not static; it has increased a lot in the last some weeks, and even way before that. There is a reason why Microsoft is now called Microslop - the decrease in quality is one big reason for that. AI has not led to an increase in quality - Microsoft needs to acknowledge that. But they won't, because they already committed totally to AI without any way back now.

it's probably not a big dent in market share, but it's probably a good tipping point

On the other hand, Apple still refusing to fix shit in macOS people have been asking for decades.

This will never not be funny to me. These clowns really did remove something that existed for decades and then spend more than a decade trying to edge their users to the fact that they were gonna bring it back. In 500 years when somebody looks up enshittification on Wikipedia, this should be the first example.