For a start, I believe the Posse Comitatus Act provides that action by any regular military forces on US soil is strictly forbidden without the express approval of Congress, so that order would constitute a knowing breach of Presidential authority and therefore be an illegal order.
And inciting a private citizen to carry out an assassination attempt by political rhetoric doesn’t pass the “official” act test, so a fail on that one, too.
In addition, the fake outrage over the presidential immunity ruling is simply more far-left mis- and disinformation, designed to scare the voting public into believing that it gives the President carte blanche to do whatever they want without fear of recourse, when all it does is codify what was inherently understood for the past 250 years, before Biden’s DOJ tried turning the country into a banana republic with their lawfare against a political rival.
It’s just nonsense.