I agree that Trump is a moron who’s not capable of formulating and/or executing a plan more complex than “make gesture, expect hamburger.”
At the same time, however, I would assert that it’s well established that Trump surrounded himself with lots of people who were capable of conceiving various plans and acting on them. We have heard repeatedly from insiders that the Trump Way is to bring in people to argue in front of him, and at some juncture he interrupts the argument to point at somebody and say “that, what he said, do that.”
Naturally, because he is incomprehensibly stupid, he hasn’t followed the argument at all, and his decision is not a calculation, it’s a knee-jerk reaction, either because he’s gotten bored or because somebody said or did something that pleased him personally. And, of course, we all know that these decisions could be, and regularly were, rapidly thrown overboard when some other knee-jerk idea presented itself.
In the specific case of the January 6 insurrection, I’ve seen some analysis suggesting that it failed not because it was a bad plan, it failed because there were too many plans. You had Giuliani’s team barking at the courts, you had the rabble-rousers in Congress spreading conspiracy theories, you had the Gorka types quietly reaching out to activate extremists, and on and on. This situation arose because Trump is, again, an idiot, someone who can’t formulate a clear and unified strategy, so he basically gave carte blanche to all the loyalists to “make something happen,” without any kind of coordination. The overall energy was spread thin across the broader effort, and in some cases they crashed into and interfered with one another.
The point is, I disagree with dismissing the idea of a “Trump plan” simply on the basis that Trump is a dumbass who can’t plan, or understand other people’s plans. The conspirators were acting on behalf of Trump, and with his full, albeit necessarily dim, awareness. “The Trump plan” may be semantically imprecise, but it’s easily understood as “the Trump team’s plan,” and any quibbling with the phrase is just that, quibbling.
That being said, if my understanding above is correct, while the plan did not originate from Trump specifically, it certainly failed because Trump himself, sitting at the center of its machinations, is a once-in-a-generation epic-level dummy who simply couldn’t pull the fish into the boat.