The local repair guy is ex-military and could repair or refab anything - any material, including paint finish. Airplanes, metallic, carbon, otherwise, you know it. Also restores cars. He is an expert craftsman so I trust his opinion, but yeah this is all second hand so take it FWIW. I'm sure that the actual incidence of issues with Canyon is objectively very low, just maybe a bit higher relative to many other brands. In his experience. YMMV and all that.

Years ago I had damage to the top tube of my older TCR. I brought it to him at track one night (his son was a nat champ). He takes one look at it, presses hard on it with his thumb, the tells me it doesn't need repairing, but that he'd do it anyway if I wanted it. He asked if I wanted paint matching, I said no don't bother. The next week he returns it to me, repaired, with paint matching PERFECTLY. Like you can't even tell where the repair was at all, or distinguish the paint job from the rest of the aged frame. Amazing. I handed him a hundred bucks cash and built it back up. Solid.