Agree, 24/30 is a good width and probably the minimum these days. That's what's on my road bike currently, but I'm thinking of moving them over to my new gravel build and getting a new road set.
At this price it's hard to say no. You wonder how they can do it for so cheap?
My theory is maybe the the bigger players are selling off cheap rims in bulk to finance development of more trendy, wider wheels...? Hard to believe, given the volume Kore have sold, these are simply QC rejects or "fallen off the back of a truck"