What do you think burning man has to do with this?

Allegedly people do a lot of drugs at Burning Man, and one of the popular uses for Bitcoins is purchasing drugs without the traceability of a credit card.

I think that you're dramatically overestimating the amount of drugs that people do at burning man.

On top of that: if you're bringing drugs to Black Rock City, you probably do drugs in default world anyway, and have a dealer back there for them.

I'm not estimating anything. I'm just explaining what was most likely meant by the reference to Burning Man.