I'm not sure who the whole 'Elmo' thing is for -- more than anything I cringe at the person saying it, rather than thinking less of Elon or whatever the hope is. Like 'drumpf', or the whole small hands thing, it just comes across like a redditism that escaped confinement.
Is the hope that Elon or fans of his read it and get offended? I doubt they care much, and I fail to see the point of it.