Different people will have different thresholds, through I would suspect that people will start to react if the military started to take political sides. I can only speculate, but I think a lot of people tune out when most of the events occur on twitter or in political speeches. I think also that people got a bit desensitized to mountains of lawsuits occurring from the whole period between 2016 and forward (a trend that might have started even earlier). The details are different but if people are toned out then they won't be listening to hear the details.

It is generally hard to make people care about a threat that they don't perceive, and even more if they view the whole process as being done by fools and jesters. The many Capitol Building riots memes is a good example where people are mostly joking about how incompetent the people involved was, rather than portraying a realistic and scary threat.

It is hard to have a more polarization response than one side laughing because they see fools and the other being scared because they see a realistic threat.