That made me question who this is for. Looks like it's only for racing bikes that have taken off the rear mudguard. And those bikes are typically used to exercise..

Which makes me wonder about the cleaning after it rained..

Nobody who rides a road bike would be seen dead with something like this. There are proper road ebikes for that.

Only commuter and bikepacking bikes have mudguards, almost nobody puts one on a mountain bike or a proper road bike, regardless of whether they’re electrified. This looks like it’s more for these “sporty” categories of bikes.

That's a big blanket statement