Surely you have also to act on it in some way?

I don't agree with the 'ideology' but I don't find it totally unreasonable or objectionable.

And surely even 'everyone who doesn't worship X and abstain from Y and live according to text Z is living in sin' is... That's just an ideology, that's fine, it's not terrorist until you do some sort of destructive act in its name or try to enforce it somehow?

Some context lost in the linked article I think, not having read into it.