The decision to use react for the start menu wasnt out of competency. The guy said on twitter that thats what he knew so he used it [1]. Didnt think twice. Head empty no thoughts
It is indeed an impressive feat of engineering to make the start menu take several seconds to launch in the age of 5 GHz many-core CPUs, unlimited RAM, and multi-GByte/s SSDs. As an added bonus, I now have to re-boot every couple of days or the search function stops working completely.
I googled the names of the people holding the talk and they're both employed by Microsoft as software engineers, I don't see any reason to doubt what they're presenting. Not the whole start menu is React Native, but parts are.
That tweet is fake, and as repeatedly stated by Microsoft engineers, the start menu is written in C# of course, the only part using React native is a promotion widget within the start menu. While even that is a strange move, all the rest is just FUD spread via social media.
It is funny how quickly this became normalized. During Vista time everyone was absolutely shitting on awful performance, now that PCs became faster it is apparently fine to use one dog ass slow managed language (C#) over another (JS with RN).
Even though RN for Windows is just a thin wrapper over WinRT, but who gives a shit, right? Because JSLOLLOLOL.