The important thing here is to know how did they measure young people's political ideologies. I wouldn't expect it was self-perceived as currently, people have a hard time admitting they are conservative compared to admitting they sympathize with a conservative party.

If it was determined by a questionnaire, it would be interesting to see what questions were included. Maybe the questions weren't well planned and that's it. Maybe they equalled feminist takes to ~~progressive~~ liberal ones, which is something that can be discussed. In this case, I would be picky about the origin of the graphics.