12500km on mine in a year, 3/4 of that loaded touring and 1/4 gravel riding. I looked around specifically to find complaints about Waltly durability and didnt find much, if anything.
I know they supply a lot of companies so maybe lost in the mire because Im sure some must break.
You certainly can't get anything out of Waltly for £450 but I take your point. 15k km on mine so far and not so much as a squeak