IDK, it works for me really well. It raises emotions and you do have to deal with that, but with that emotional stake there also comes interest.

You can't really talk about anarchism or liberty with someone who just wants to drink his beer and relax and view you as a nuisance who prevents them from relaxing, because you are pushing too complex thoughts on them.

On the other hand if you get them emotional, they are way more likely to engage in the debate. You just have to work with that well.