as far as i can tell, the whole point of haikuos at this point is "fun". as pointed out e.g. at https://en.wikipedia.org/wiki/Haiku_(operating_system)#Criti..., haiku will never be a "mainstream" os. it seems plausible to me that riscv enablement is more "fun" than figuring out how to mangle crappy proprietary drivers enough to barely run.