On that I agree. When I read the manifesto, I thought there were a number of incredibly prescient ideas. Other parts I disagreed with.

I agree that there's a distinction between having an outside opinion about the direction of society, and becoming a terrorist.

It ultimately comes down to if someone truly believes that the ends justify the means.

In my opinion, deontological morality is primarily what prevents terrorism, followed by individual humility and acceptance of fallibility.

Unfortunately, I think utilitarianism and consequentialism are currently in Ascension in the USA.