The problem is any fraud at all, and the fact that it’s so incredibly easy to do it now, degrades trust and the sense of fair play. It’s now much more believable to question refs making bad calls against one team or another because of a profit incentive.

I'm not sure legalized betting makes fraud itself that much easier, but I'd agree that the incentives could now be larger in the US if tied in with legal betting. Those markets dwarf the illegal markets that drove a lot of famous instances of fraud prior to legalization. More fans are probably suspicious of calls now but, I mean, sports fans don't generally need much of a push to find a reason for suspicion of officials.