Just to add a different anecdote: I have a 2021 radrunner I use daily in Seattle (hilly & rainy), love it, and I have non of these complaints. I have 4 friends with Rads who love them as well.
I don't doubt any of your experiences, but I mention this so readers can get more perspectives.
Perhaps one significant difference between us is that Rad has a showroom / repair shop in Seattle, although I haven't needed them for anything other than easier parts pickup (fenders and break pads.)