One consequence of this belief is that liberals do not like to accept that medical science should consider differences between men and women, for instance, when testing new drugs. Hence this odd fact:
In 2015, when a female version of Viagra called Addyi was tested for potential side effects, it was tested on a sample of 25 subjects - only two of whom were female.
Claire Lehmann has written an excellent article on the resistance of liberals to accepting biological sex differences in medical research. (https://www.commentarymagazine.com/articles/the-xx-factor/).
She looks at some case studies where ignoring the biological distinctions between men and women has led to dosages being set too high for women, and she details the pressures placed on scientists to avoid research on biological sex distinctions.