Well, let's define terms here:
"Compelling: Forceful, demanding attention, convincing."
Compelling | Definition of Compelling by Merriam-Webster (merriam-webster.com)
Nowhere in such definitions do we see the words "factual, proven, removes all reasonable doubt."
What Mr. Bannon is saying was shown by his own words..."The Democrats have a very
emotional...case."
A trial (and this is a Senate "trial")
should not be based on "emotion," but rather FACTS.
If a trial is based on emotion and partisan spin, then it may "compel" some to agree based on their own partisan bias.
However, it is nothing upon which to base a decision of factual guilt. Else it is no more than a kangaroo court, leading to a witch-hunt style "burning."