Jonathan Chait described “Ron DeSanctimonious” as a “low energy nickname.” I agree. Trump uses one-syllable words; “sanctimonious” sounds like something he got out of a thesaurus. It isn’t as punchy as “Sleepy Joe” or “Lyin’ Ted” or “Crooked Hillary.” It just isn’t authentic. I’m not even sure his followers know what it means.
My advice? Go with “Ron the RINO.” After all, anyone who doesn’t openly agree that the 2020 election was rigged can’t be a real Republican, can he?