this is utter nonsense. I brought many dogs here from Canada they are friendly with all the neighborhood dogs, they are in good health and we don't have them in an 8 foot fenced off yard
Better food, nicer people, better environment to raise my kids. Lower cost of living means my wife, kids and I can afford to do more fun things.
Also I was treated like a second class citizen in Canada for well over a year and my coworkers wished my unborn baby would die as I was getting fired from 3 of my jobs.
Getting treated like subhuman vermin by people who said they'd have your back is a strong motivator.