I don't take sides on the opinion of BE vs LE, but why would the kernel devs be in charge of deciding how a hardware platform design would look like? Are they

I don't take sides on the opinion of BE vs LE, but why would the kernel devs be in charge of deciding how a hardware platform design would look like? Are they in the design commitee for RISC-V? Imagine the lawn mower deciding to stop running because it detects a type of grass that the lawn mower creators didn't like.