Au contrarie; sports are a fantastic way to get socioeconomic issues (like labor rights) front and center on the minds of people who wouldn't necessarily be thinking of them the same way. And they create opportunities for people to educate themselves in other areas as well. Not every sports fan is the willfully ignorant meathead you describe, nor do willfully ignorant meatheads exist because of sports.

MLB is not only a state sponsored monopoly, but like every other American sports league a blatant cartel which is constantly squabbling with its own employees over revenue shares (at the expense of the on-field product) and lying about how much money they actually make. Same thing as most other business owners, but people are a lot more willing to listen to the perspective of, say, Shoehi Ohtani than a random McDonald's employee. I can tell you that I am personally much more clued in on these sorts of societal problems as a result of sportswriters discussing labor issues, on top of being far more statistically savvy and generally more sceptical of oversimplified narratives than I would be if I had never gained an interest in baseball. Nor would I have anywhere near my current understanding of global politics without global football (soccer) creating both a mechanism and incentive for learning about them.

But that's not even the point: sports are not a "scam". Sports exist first and foremost because for many people, watching elite athletes play a game is fun. That is the intrinsic value of professional sports, and nothing about that is inherently scammy. Full stop.