iPad Pro M4 - Magic Keyboard Pro Delaminating

I'm now getting very fed up with the poor build quality of these iPad keyboards. I've had three iPad Pro's in the last 7 years - and I am currently on my sixth keyboard. (Having been a Surface Pro user for many year before making the switch - I never had any issues at all with Surface type covers).

This time, the back (i.e. the bottom) of the keyboard has delaminated (the photos are from yesterday but it's getting worse). It can't be water damage - at most it has been damp from cleaning with a wetwipe.

The Apple Store was extremely dismissive (according to policy), that although it's still functioning and it's 'only cosmetic' no exchange or look into the failure...! I have also lodged a complaint because a £300 keyboard shouldn't fall apart like this - with one very careful owner.

Not sure where to go from here - it's very disappointing for such an expensive devise, and now I have a iPad which won't sit flush to a surface because the plastic is too baggy. Very poor from Apple.