and that burden is as far as I’ve seen being forced on those long term contributors.
This is not what is happening. The current long term contributors were asked to clarify semantics about C APIs, so the Rust maintainers could take it from there. At no point were the C maintainers asked to help maintain the Rust bindings.
Between Rsbuild, Farm and Mako, I wonder which one will emerge victorious. It seems Rsbuild is the most well-known at this point, but also the slowest of the three (though it could be argued at this point they’re all fast enough). Farm has compatibility with Vite plugins as its ace, while Mako is supposedly the fastest of them all.
Meanwhile, Vite itself is apparently not sitting still either, investing in Rolldown to speed up and improve its own bundling. I encourage their friendly competition. It seems the main winners are the users :) (unless you bet on the wrong horse, in which case you may grumble and hope for a better pick with your next project :p)