Resume-driven development making people justify their jobs.

Come on. Are you an employed developer? If so, even if you have that much power over the flagship product of the company, that you can use it to pad your résumé, do you think the same happens at Microsoft? By all means, the bugs may speak of skill issues (or may not: there's also crunching, mandated AI... Who knows), but the Cloud-first, push-ads, force-account etc. enshittification is the implementation of a vision I doubt was collectively composed by devs, let alone a single dev.

Sounds like bullshit, I'd rather bet that Microsoft wanted to make some Cloud OS, web friendly thing and expected it to be as successful as Visual Studio Code

Also, I don't think that integrating react app into Windows is trivial