While I agree with the writer's assertion that equal pay is the morally right thing to pursue, and US Soccer cannot hide behind the collective bargaining agreement for all its past disparities in treatment, this yahoo writer has a fundamental misperception in their view that non-profits are established or legally obligated to serve the greater good.
I find it difficult for US Soccer to argue they are separate entities when the television revenues are indeed sold as a package. However, I am not sure what the impact would be of separating those rights. It is entirely possible that the women's game alone would not generate very large TV bids. Other than World Cup and Olympics, there is very little demand for women's soccer on TV. Does US Soccer own the rights to the TV/streaming broadcasts of Olympic and World Cup Soccer? I do not think so. So for WNT you are selling She Believes Cup, friendlies, and what, NWSL on Lifetime?
I am skeptical of SUM and its marketing deal, but I do agree that when it comes to domestic soccer on TV in the US, the packaged whole (Men's,, Women's, MLS) may be worth more to a broadcaster selling advertising than the sum of the individual parts.