Its almost as if sports in the US are tied up with toxic masculinity and patriarchy, and thats the heart of the issue some people have with them.

I should have said that sports correlates with a spike in DV and not causes it. However, just as I can't say for certain that sports events directly causes DV, I don't think it's correct to say that there's no link between sports and DV and that the same net amount of abuse would result even if sporting events are removed from the equation.

Anecdotally, I used to volunteer with a charity that helped out young people who were in trouble, including DV. Major sporting events were always times where they tried to get all hands on deck because there was always a surge in calls compared to just about every other time of year except Christmas.

Obviously alcohol is a huge factor too, but sporting culture in the Angloshere is also incredibly entwined with drinking culture so its hard to separate those factors.

That's kind of presumptive and even if your claim could be verified (it really can't), way too many domestic partners have reported violence peaking during The Big Game style events for there to not at least be influence on when their violent outbursts break out, or how often.

It'd be like saying soccer hooligan riots would 100% happen exactly the same way if every single soccer hooligan was collecting stamps instead, while also blissfully ignoring when soccer hooligan riots happen (after soccer games), which isn't just out of thin air.