Judging by the aforementioned drawbacks of sleeve bearings, it might be modern enough.
The fans are supposed to draw out hot air through the cracked sunroof. There may well be better ways of doing this (eg the way VAG vehicles do it where the panel powers the a/c), but it will be more complicated to implement (and here I thought swapping out the fans would be easy).
Centrifugal fans fit a very specific use case/placement (in my mind), whereas axial can generally fit and work in most places. Seat ventilation (definitely the older systems) was axial, from memory (Got a kit for that as well, but it's more integrated with the car so I'm leaving it well alone)