Yeah, artistic swimming/FINA has seen the writing on the wall for a long time. While everything is now balance in terms of total athletes there are still imbalances within sports with football, Greco-Roman wrestling and water polo having more men and artistic swimming and rhythmic gymnastics having more women.
The push for equality in the men's events has slowly created a counter push for equality in the women's events which now holds more ground given the equal overall athlete quotas. Any reduction of men's quotas (or increase of women's quotas) will have to be met with a counter response on the women's side.
Artistic swimming has done a lot of work in preparation for when the IOC drops the hammer. If the IOC ever decides to grant women's water polo the extra 22 quotas, I expect to see artistic swimming flip to mixed duets and teams (with teams of 6/7 women and 2/1 men).
Rhythmic gymnastics on the other hand has done nothing, maybe they expect football to always be imbalanced?