What is the actual issue here? Because I see a lot of conflicting arguments; and I think clarification is quite pertinent. Is the issue that USWNT is asking for more money from USSF to bring them in line with what USSF pays the men? Or are they arguing for prize money to be greater for women's international tournaments? A directive issued by FIFA. What is the flow of money here? I really don't suppose there is much that can be done about the amount of prize money for the Women's world cup because it's already 30% of commercial revenue, but if the USSF are paying women lower appearance fees, lower bonuses, lower travel stipends etc., than the USMNT, then that is clearly wrong. Primarily because the Women's team is more commercially successful for the USSF than the men's team. And revenue generation, and commercial success are the only viable metrics for determining a gender pay difference.
Given the hundreds of billions of pounds at stake in men's football, and consequently the cost of insurance, and the financial impact of injury to key players for clubs while on international duty, not to mention the vast revenue generated from Men's international tournaments; it is practical that Men's international football - for many nations - will both cost more and pay more. USSF cannot really argue this is the case for their Men's and Women's teams. There are very few bonafide stars in the men's team on lucrative contracts - a small handful - and the women's team outsell the men's in tickets, viewers, and shirt sales. Sounds like a winning argument for equal or greater pay on behalf of USWNT.
Some people just want to see Women footballers paid less "because it's shit and no-one cares about it"; and while that may be true to some extent, the latter part of that statement is certainly not true when it comes to USWNT. The only sensible and dispassionate argument to be had here, not least so you don't look like a sexist, ignorant prat and also...you know....support good decisions, is to look at the inherent economics (costs and revenues) of the respective operations. It is also worth considering that if the women's game is going to grow, it is going to require some subsidization from the vast revenues in the men's game. People will balk at this, but the Men's game came to prominence in a domain with little incumbent competition at a time when women weren't expected or allowed to play sports in the same way. Now the rise of the women's game faces the huge juggernaut that is the Men's game, and competing for eyeballs in a market dominant by widely adopted, entrenched, and mature incumbents.
I want my daughter to have the same opportunities as afforded boys, and for this to happen we have to (a) equally reward the success of women in whatever field they occupy (and USWNT has had equal or greater commercial and sporting success than USMNT), and (b) invest in pathways to expand opportunities as a correction and recognition of the gender inequities of the past.