It feels like you missed Sanders' entire campaign then [0] [1] [2].
The main differences between Warren and Sanders is that Warren's policies are better, and Sanders is a Jewish man (I feel like potentially being our first Jewish president didn't get enough play, but it would have been a powerful moment for the US and humanity as a whole).
> it seems pretty sexist to imply that men oughtn’t be cheerleaders
If you use phrases structured as "[stereotype] [people the stereotype is used against]", that's a stereotype. If your excuse is that the stereotype isn't absolute, it's a tacit admission that you used a stereotype against people. Own it or don't, up to you.
[0]: https://www.youtube.com/watch?v=N3mvbxeA1UA
[1]: https://feelthebern.org/bernie-sanders-on-racial-justice/
[2]: https://feelthebern.org/bernie-sanders-on-womens-rights/