Moving goalposts, the point was about SaaS SDKs giving tier1 support for React and nothing else, thus giving Vercel their current market position.
Invalidating the remark "I can't think of any serious company or project that would use this thing."
Where's the example?
I'll be honest I have never heard of this nor do I understand why it matters. It looks like it's just internal Vercel marketing speak that basically amounts to them desperately trying to build a platform and extract rents off of it.
It matters, because React is one of the reasons FE development sucks nowadays, and in many cases there are no alternatives, unless one loves yak shaving for their framework du jour.