I would say both are true. Kirk had the number 1 youth conservative movement. But, even with that, he isn't as well known as some people think because very few of the youth are engaged in politics. Most of the people I know who know of him are the terminally online YouTube politics watchers. Which is not a large group. I would say the same would be said of whoever the most influential leftist young political thinker is, maybe Hasan. They are big in a circle, but its not really a that big of a circle.