This is not the case. RSC solves the hydration problem, in which hydration is profoundly expensive (larger bundle sizes, more client JS to parse and execute, and slower time to interactive), when most of the UI on any website can be non-hydrated. This also gives you the ability to write server only code (which as it would turn out, reduces sending third party deps to the client even more) for free with beautiful composability to client side hydration when you need it.
Everyone hydrates at some point. Maybe you write isomorphic javascript or maybe you render a rails or python app and sprinkle in some JS. RSC enables you to do this with complete composition and re-usability.
I'll put my money where my mouth is: RSC will continue to grow in adoption and its patterns will be adopted across many UI frameworks and libraries. This wasn't a solution in search of a problem, this was a large step forward in giving us more optionality as to how we architect websites.
> There are too many devs out there only expert in the way React does things and can’t step outside of it.
This is a weird ad hominem, attacking developers' skill instead of the actual technology. There are millions upon millions of React developers, and many of us have been building successful software for a long time and step outside of React every day.
> But if you’re making something like a blog with lots of drive by visits and only small islands of reactive content IMO it’s the wrong choice.
For some use-cases it is not the best choice, and for others it's the correct one. No one is hailing React as a one-size-fits-all solution, rather it remains a great balance that scales remarkably well to many needs.