The military presence is just following the left's narrative. When the FBI implements a massive task force to deal with "right-wing terrorism", you wouldn't assume it's anything else than fearmongering about a made-up boogeyman. This is what this is. The military accepted Biden as president-elect, and even if Trump had some ridiculous plans to take power, the military wouldn't obey him. The military coup would work out the same way the "1776 will commence again" storming of the Capitol went down: a couple of dozen soldiers disobeying, being told to leave the building and arrested outside and subsequently fired and prosecuted. That's the level of resistance the right has been willing to put up this far, and even that gets attacked, discredited and denied by other right-wingers.

Trump would call for the military to support him taking over, the attempt would fall flat and within the hour the same people who called upon him to do it for months now would turn around and claim the video of him calling upon the military was a deep fake, all a false flag to discredit Trump, he'd never do that, yadda yadda yadda. The few soldiers who actually followed the call would be denounced as Antifa or being misled victims.