https://www.wsn.com/nba/nba-vs-wnba/
By this, it looks like about half the people attend and the viewership is half or less depending on the time in the season.
So yeah, nostr:nprofile1qqsgyvxxygk755quz6xcw80yp57w6j2xk4sgdqa0fp4z9e25yejzvsgedp7qt looks to be right. Not enough people care enough to make it a very profitable venture, at least not compared to the NBA.
The highest salary is $252,450 a year which is still pretty good in my estimation but when you're comparing it to the millions the men are paid I guess it looks bad.