Yesterday I was told that Millennials cannot understand this philosophy.
Perhaps a bit of history needs to be explained to that generation. Still, I think that some of them can find Dudeism interesting, as we have a generation that goes outside the standard class struggle and lives more in cyberreality. That means they hear about eleven dimensions, energy, yoga and other stuff of this kind, even if they no longer have what would be called a proper guru. Just look what recent blockbusters are about, like 'Doctor Strange' with Cumberbatch. A lot of New Age things.
If you think about yuppie-ish people - well, they may be interested in something else. But esoteric courses are still present on Udemy, together with Excel courses.
I am something in the middle. An old millenial if you like.