I have always felt that Unions don't help women to anywhere near the same extent as they help men. Male-dominated jobs seem to do very well out of unionisation, with regards to their pay and terms. However, look at female-dominates professions, despite unions, they don't get anywhere.
The sexism is institutional.
And then all this happened, and it really demonstrated starkly that unions have never had interest whatsoever in supporting the fair treatment of women.