That top psu mounting makes no sense, it would look better on the bottom.
I think that glass PCs are stupid as long as motherboards and other parts aren't adapted for good cable routing. Most PCs look like rats nests inside anyway.
Anyway... I have a top-mounted PSU in my PC.
It is semi-passive, and almost never activates its own fan
The CPU cooler is mounted vertically, so it blows air through the PSU and out.
This means that there is only ever one fan active in the whole system, and it is therefore almost inaudible.
Note that the CPU fan is a Gentle Typhoon with
ball bearings which can be mounted horizontally to blow upwards. Liquid bearing fans should only be mounted to blow sideways.