But his laning hasn't actually gotten any better. If anything his levels 1-5 are going to be even worse since he lost a little armor shred on E, so his trades are weaker.
These changes just promote his mid game strength further - not his late game. As an infinitely scaling champ you'd assume his late game was his strength but it's really the mid game, where people haven't got enough damage to chunk him out hard or haven't bought
which makes him essentially useless.
It's a good change overall, it rewards sticking to people if you can. If you can't (which is fairly normal for Nasus) then you've actually lost some damage.
Good for duelling tanks though.