Why are you assuming abuse by parents is solely being targeted at the opposing team’s players? Parents may just as well be shouting at their own kid for what they see as “sub-optimal” play, and at their kid’s teammates for what they see as “getting in their kid’s way.”

I'm not sure why you think I was assuming that. Or why either of those wouldn't be a valid reason their actions shouldn't result in punishment the most direct way possible to the parent. A loss for their own team. That's not a good outcome for someone who treats their kid as a lottery ticket no matter who they were harassing. Although I do understand the response in a sibling post that it still gives the asshat parent some degree of control over policy and outcome. It seems like you may have mistaken some of what I said as implying something about the recipient of the abuse. Nothing I said had anything to do with the recipient of abuse. Just the parent and the team they want to win for vicarious satisfaction.