Yes, he sold his seven or so mansions in California when he moved to Texas last year, and claimed to go possession free living in a $50k tiny house.
First off, one would have to assume he suddenly swore of luxury after seven mansions. Perhaps. He does say a lot of dumb stuff when he's stoned that he ends up trying to hide later on (e.g., submarine scandal).
Second, he doesn't seem to spend too much time in his tiny house:
Third, where does he keep all those tuxedos he keeps showing up wearing at exclusive events for billionaires?
Fourth, he's got like 10 kids and multiple wives. And he keeps getting women pregnant. That's literally a luxury.
Maybe we have different definitions. Sure, he owns a cheap house this year that he seems to not live in, but cavorting with other billionaires and treating women like breeding stock and throwing cash at offspring so you don't have to bother raising them doesn't really strike me as living a lean life.