Why does it matter? The complaints are either right, or they're wrong. The complainers' motives for making their complains have no bearing on that.

Maybe, but for those of us who aren't experts on constitutional law, it's difficult to ascertain exactly who is in the right, we have to decide which self-proclaimed experts to believe.

For this reason it's helpful to understand the motives of those putting forth a particular argument.

I have a rule, and I think it's a good one. When I hear some political rhetoric I ask myself "if the parties were reversed would this person still be saying the same thing?" If the answer is no, I ignore that person. This cuts out about 97% of all political discussion and saves a lot of time.

I don't think that rule can apply for anonymous Internet commenters listing objective claims. You probably don't have enough information to determine the partisanship of the commenter, and even if you did, their claims are either true or false, and debating that is almost certainly a better use of time.

Right. I didn't like either of them, I'm not a Republican or a Democrat.

I just think it's odd to say that Trump should be impeached for something his opponent did while in office.

Complainers can't prosecute and convict. Courts can. That's a difference I'd recommend coming to terms with as it's the crux of this discussion at a level that's intensely germane.

In this case particular, actually, it's the legislature that can prosecute and convict. Still not random people on HN, though :-P