My problem is with the description of that action as a "coup". I'm not defending those people. I'm not informed well enough to do that. But a coup? I don't think so.

Coups generally rely on military support, or some sort of established basis for taking and holding political power. This was not a coup. Or it was the shittest one ever.

If you consider that their aim was to overturn an election by force, then yes, it was a coup attempt. I think they were counting on the military and law enforcement rank-and-file (which overwhelmingly support Trump) to join them.