Well, all of these are politics and ideology. It's OK to have an ideological bent of some sort or other. You can indeed be highly intolerant of those who are intolerant in certain ways. You can hate certain kinds of hate. And you can call out greedy callous bastards wherever you see them. It's basically being discerning.
GP is saying neo-Nazis are "not just politics, but also something worse". You're not really disagreeing with them, maybe just missing their point about some ideologies being worthy of planned exclusion from a civilized society. Aka the paradox of tolerance. That's what makes some political stances "not just politics".