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.
The ads pushing would be just as possible with a fully native start menu.
Using React for it was probably done since it's just objectively easier and faster to tweak a React app than native components (see various folks complaining about WinUI).
I was addressing the concept of developers taking it upon themselves to rewrite the menu (in whatever; React is beside the point) in order not to seem redundant and to pad their résumés.
