Yes some of them allow their idealism and youth to get the better of them, and demand stuff that is unrealistic and impossible to deliver. And maybe they don't fully recognise the consequences for themselves, if it ever was. Personally, I just believe most activists are people who want to make the world better, but are often too young and inexperienced, and overly idealistic to recognise the difficulties, that achieving that usually requires. Change often requires compromise, which a lot of activists may view as a surrender. I felt much the same way, when I was a student, but over time my opinion has changed. And my worldview, is no longer so simplistic.