Yeah, let's see.
First, no it isn't. Otherwise Nixon would never have resigned.
But that was then.
Of course it seems "about the policies" now that the law-breaking etc. has been ignored by the electorate and squelched by his election.
Problem is, if they fuck all the policies up, all those that supported him will continue to support him, and whomever he hand picks to follow him, and blame the now powerless Democrats, immigrants, women, gay people, "deep state" and whomever else isn't them for all the ills. And his followers will come right along.
So it doesn't matter, does it?
Nope.
But that what he wants the "other side" to feel. Fear. Hopelessness. Terror. It what keeps autocrats in the big seats.
Go look at some of the posts from his supporters on these threads, reveling in the pain and suffering of others. Remember when Harris promised to build bridges and name Republicans to positions of import in her government? Has Trump done that? Will he ever? Of course not. He only wants sycophants. He's not even naming experienced experts to his cabinet (his previous cabinet nearly to a member disavowed him and/or won't work with him again).
So if/when he fails, we all who think he should be as far away from the WH as is possible (preferably Uranus) can all say we told you so, and not a single poster here who supported him will say, "You were right. We fucked up. We learned our lesson." Not one.
So again, the success or failure of his policies are 100% completely and totally irrelevant to his support.