I agree it's probably true, but he hasn't been convinced of insurrection (yet), has he? The sixth amendment to the Constitution guarantees a fair trial, no?
So the sitting government decided their opponent is guilty of "The act or an instance of open revolt against civil authority or a constituted government", and then told you and everyone else you're not allowed to vote for him. Could that not be applied to all opposition?
That's not concerning? What if it's switched next time?