I think the issue is a lot deeper than the article suggests.

The problem is, society is fucking broken. The middle class is being decimated. People are going to take their destinies into their own hands, as seen by the growth of daytrading and sports betting. With wages being destroyed, billionaires avoiding taxes, COL skyrocketing for the middle and lower classes, and jobs evaporating, who's going to fucking blame someone for trying to figure out how to use what they know (in this case, sports) to make money?

Plus, this generation has seen another class of gamblers (big banks) get bailout after bailout without any problem.

Sports betting is the symptom, not the root cause that needs to be addressed.

I just don't think that theory of causation works even if we assume the premise for the sake of argument. Both daytrading and sports betting are much larger now than in 2009, when I hope we can agree wages were destroyed and jobs were evaporating on a scale we can hardly imagine today.