Terrible is an exaggeration. It's layout is similar to something like the Velka 5, which also doesn't directly support fans either. Temps in this case are 100% normal. Every video review stressing it had no problems keeping everything reasonably cool. However, like you said no one really was probably checking the SSD/HDD temps but they also weren't throwing any errors due to critical temps, which is a fine line.
However, I totally agree. Just one more fan for exhaust would have totally changed the game. They could have found a way to put it somewhere.
With all that said this is their first true sff case entry and I think they nailed it. You want sff to get mainstream you need to make it as easy as possible. They went ahead and took out the headache that a lot of new time builders suffer with. Cable routing and cooling. It's already done. So I think it's great.
Now when these people get a taste they start to dip their toes in smaller and more premium cases. Which helps craft makers like
@Wahaha360 justify a premium $200+ dollar case. I see it all the time with these cases people freak out about the cost yet spend $200 on a poorly optimized because it's bigger.
What I'm saying is we should be supporting NZXT because they really did launch a decent case and bundle. Ali even said he's putting this in his top recommendation. NZXT is active on Reddit and have been welcoming feedback.