If Rad monitors this group, here is a really good mounting method they could incorporate in future fenders that I used last year on another bike ( Cube Acid)
https://www.bike-discount.de/en/buy/acid-mtb-60-mudguard-set-with-stays-777967
The stays attach on the inside of the fender without any screws at all!
Rotate stay 90 deg, insert into plastic slot in Fender attachment, spin back 90 deg and wire snaps into place - done!
Key point here is that the fancy tooling is not part of the plastic fender but in the rectangular insert so it can be adapted to any plastic fender as long as it has the right size rectangular holes.
Scroll down page to see install video.
https://www.bike-discount.de/en/buy/acid-mtb-60-mudguard-set-with-stays-777967
The stays attach on the inside of the fender without any screws at all!
Rotate stay 90 deg, insert into plastic slot in Fender attachment, spin back 90 deg and wire snaps into place - done!
Key point here is that the fancy tooling is not part of the plastic fender but in the rectangular insert so it can be adapted to any plastic fender as long as it has the right size rectangular holes.
Scroll down page to see install video.