It's not the wrong design; RISC-V is designed around extensions, and they left room in the instruction encoding for them. They don't have a 800-lb gorilla like Intel shoving the ISA down customers' throats (Canonical is the closet thing) so there is some debate on which combination of extensions are needed for desktop apps.
> They don't have a 800-lb gorilla like Intel shoving the ISA down customers' throats
Nobody really forces you to use x64 if you don't like it, just as nobody forced you to use Itanium — which Intel famously failed to "shove down the customers' throats" btw.
