“Let’s talk about the artist formerly known as Twitter,” Stewart said. Stewart returned the insult by quoting his post and writing, “Elon Musk is an extremely skilled propagandist.” He stopped there, suggesting Musk isn’t disguised as anything, which the disgruntled billionaire didn’t seem to catch. Elon Musk, the world's richest man, speaks in January at the World Economic Forum. “Stop being so humble.”Musk has long amplified a conspiracy theory about Democrats “importing” undocumented workers to win elections and to replace white people. Whether he’ll debate this with someone other than a sycophant is unlikely, though Stewart would certainly love to.