A friend had show quality Papillons, and only one of the herd (they had six or so retired show dogs, that they used for agility, and obedience) was barky. One also didn’t like strangers messing with him very much, and had a huge regard for his personal space (a little snappy with pushy people).
I think a lot of the problems is that Paps, and Poms were popular for a while, and they made the sleazy breed for profit pure bred puppy mill people breed a ton of them. After Kirby won Westminster my friends were very worried about Paps becoming the next popular dog. If I ever get another dog or two, I’d strongly consider Paps if I had small dogs.
My friends also were very active in rescue for the Papillion club, and fostered quite a few dogs from time to time. Their dogs were very good with the visiting Paps. My friends also showed in the AKC shows, obedience, and agility, and taught free obedience classes through the local kennel club. They were amazing volunteers, and their Paps were lovely.