What's your basis for concluding that the visual arts component provided the benefit, rather than the focus groups and direct discussion?
I also think you're missing the whole point: your activities were for children, and for people who work with children. Why are we treating women like children?
If a non-gender-activist group wanted to host arts & crafts for mental health & community building, I have no problem with that.
I have attended a few and found that there was too much "staring at the problem". We'd start with an agenda and leave off without any action items.
So, if I don't like it why don't I try to change it? At the time I was just starting out and felt that being involved in these groups was not a good use of time as they were a) a distraction, and b) put me at risk of being taken less seriously by my colleagues. A few years later and I've found that I get a lot more satisfaction by having 1:1s or small group discussions with women on my team, who are changing careers, and the leadership in my current company, than I did in a group setting.
I could just live & let live, but the point of this post was to get a feeler out for whether other people feel the same way. Thanks for the data point! :)