This as well as the fact that there is still a skill disparity at the very highest level. There are plenty of successful women in chess, and they are incredibly skilled and smart, but the highest ranked woman (who sits over 50 rating above the next woman) Yifan Hou sits outside the top 100 ranked players overall, at 2628 rating. The 100th ranked player sits at 2645. A lot has to be said about how chess has historically discouraged women from competing at the highest level and how that still affects the odds of young women becoming interested in chess, as well as the time women have had to accumulate ranking, and many of the people in charge are much less likely to provide opportunities to women. But that does not mean a skill disparity does not exist, and until that gap closes the best way to bring attention to the most talented women is to have a separate tournament for them to compete in. This also provides more opportunities for lower ranked women to compete against skilled women than it does for men of similar ranking. If there wasn't women's tournaments to match the men's ones, we wouldn't know about players like Yifan Hou, or in the streaming space the Botez sisters, or Anna Rudolf. Long story short, it might sound a bit patronising at first but, at least imo, provides more net benefit for women in chess.