Sure, but is that really a good example of stochastic terrorism? The guy blocked a road on a dam. What statements by public figures caused him to do this? And even if they did, blocking a road, though illegal, is a valid form of protest and civil disobedience. I don’t think it qualifies as terrorism—though I have not previously heard of this case so I only know what was in that article.
I’m wary of using this term overly broadly. Any criticism, no matter how mild or constructive could motivate a violent, unhinged person to behave in a violent or unhinged manner. I don’t want to see it spun around and used to silence legitimate criticisms of those in power. So I think it should be restricted to specific criticisms of specific statements. If you want to argue that this event was caused by stochastic terrorism, then I still would like to see which statements by which people you think caused it.