Consistent with Sherman to attack the very system that he benefits from. He is in the same category with Kaepernick, not being honest in his moral preening.
For right or for wrong, the Gambling industry, the Fantasy Football industry, etc. help fuel the popularity of the NFL. Sherman is supposedly smart, graduating from Stanford University. There is, actually, a lot to admire about him. But he has a side to him where he "goes dumb". And this is one of those moments.
Many NFL players complain about the gambling, or the fantasy...but then they negotiate the corresponding escalated salaries, that are a direct result of the revenue sharing from the popularity of the sport. Quite the hypocrite, Dick Sherman.