The thing people wringing their hands about legalized gambling are missing is that these people getting caught are getting caught in part because the legal betting apps share suspicious info with the FBI (largely because it’s bad for their bottom line, no altruism here). This stuff has been going on forever, but when gambling was all illegal nobody involved was talking. Most of the big betting scandals of the last 30 years start with a legal sports book calling the cops.
I think the problem is more millions of dollars now being bet on whether the first pitch is a strike or all other kinds of silly prop bets.
Big Sal generally didn’t take many prop bets unless the money was big enough to set the line where Big Sal got his taste.