33% of bike trips in the Washington area are by women. Assuming non-binary people are around 1% of trips, that puts men at 66%, giving an exact 2:1 ratio
Source: https://rosap.ntl.bts.gov/view/dot/24356/dot_24356_DS1.pdf?
And IMO you can't call a mode of transportation "fine" when large swathes of the population don't feel safe or comfortable using it (this comes up a lot when I talk to female friends about bus/metro usage too)