I don’t think the satirical name is very good. To be honest.
Someone started Mike Hucksterbee and that is a fine one. Mike won’t lose sleep over the insult, though, thanks to his insomnia remedy.
De-Sanctimonious is a few syllables too long to go into general use.
Plus, many folks may not even know what the root word; sanctimony means.
It’s not a word that often pops up unless you are talking about religion or maybe historic law
No. In order for a sobriquet to be effective it needs to be accurate, i.e. "low energy jeb". Childman Trump might want to use "Chubsy Ron" instead.