> "out of bounds" is a nice way of putting it.

This I agree with.

> it was knowingly concealing evidence

The article does not misrepresent this. The issue being raised is about how they were tried/convicted/sentenced. The part you quoted shows this.

> Terrorism is an accurate description.

> ... the difference here is the planned terrorist activity, ... If the Proud Boys were doing [the] same sort of thing ...

I'm genuinely interested in what "terrorism" means to you.