It’s not even really a problem of the Internet necessarily; it’s rather a symptom of the growing political divide in Western society. Things are “simple” now because we’ve reached the point where nuanced discussion is pointless. In Europe you can be jailed for going against the Accepted Opinions™, and we’re seeing a rise in politically motivated attacks. There is no logical solution to emotionally backed rhetoric like we’ve seen with the Turtle Island terrorists; you can’t debate ethics with someone who wants you dead.
By their own words they were going to commit terrorism. That, logically, makes them terrorists. They were found, on film, to be making and experimenting with illegal explosives, and they were found to own even more materials. If you have trustworthy evidence that this is all fabrication—evidence that doesn’t exist in your mind—then I’d be more than happy to see it.
And if you’re saying all of this because you agree with them and their actions, at least have the courage to state you support terrorism directly.