Also more anarchist politics, fewer tech bro libertarians.
I have never been at Burning Man and know only little about it, but from this little impression, I actually also did this comparison when I described the CCC event, and I have been to many of those events.
Despite the tech stuff, there is also lots of art, music and party, and a lot of crazy people (meant in a good way).
Never been to Burning Man, so take with a grain of salt. I've also not been to the CCC for around 7 or 8 years, so not sure how much the original counterculture spirit is still alive.
"The Tribes of Burning Man" was a good read, but in stark contrast to everything I've read online for the last few years.