You people just need to admit it. The only thing keeping you from believing haku and zoro being lightspeed is due to your own emotions. Cause you dont "feel" like the series had lightspeed that early.
Nothing in the series contradicts them or at least not for Naruto. Especially when the freaking manga literally says HE WAS GETTING SLOWER OVER TIME. So how can kid Naruto and Sasuke scale? You couldnt do it even if you tried.
Its the same reason why people call BC being lightspeed early series "BS". Lol get a grip