I can only surmise that he freely back-benched himself as a surrealist being a surrealist. (Never an activist) None of his art ever trumpeted anything overtly political. Even Geopoliticus Child just featured a human busting-out of a world globe.
He was devoted to his wife, who never seemed actively political either.
I know that Andre Breton was why Dali always walked around with an anteater-on-a-leash. It supposedly symbolized Breton's friendship. That's how these guys think. And they were already on hand before WW1. They assigned themselves far, far loftier places in the firmament than where they regarded raving, 2-bit Austrian housepainters should occupy.
Not defending the letter. Just throwing some dada-points... oops 'data-points' out there.