I don't think Elon Musk will popularize Shiba like Dogecoin. Indeed $ 20-$ 40 is nothing when calculated with our daily needs, but there is another value that must be taken into account behind the figure. If you compare Shiba with Doge, it's not right for me. In terms of categories, Shiba and Doge are clearly different.
Elon Musk is a smart person in my opinion, of course he has views that I don't think are comparable to the way we analyze the future of coin.