Okay, I read it. I must admit my mind blurred a bit after you wrote "nothing like Sturgis."
I would add this. As you know, Madison is now the capital of the "graying, long-in-the-tooth, older hippie-dippy, sagging communist, holistic healing, we-are-the-world" counter culture's existence.
In fact, our Williamson Street celebrations are kind of a similar event, except we don't burn anything but bratwurst.
It appears that BM is a fest that just grew. It even looks like a "child friendly" wire enclosure now envelopes the fire.
I was just interested in the history. For example, "Sturis" as you know it, started with six bikers burying a giant dead grasshopper.
Stuff like that interests me. Here's a tid-bit. The metal struts that hang down from the back of a semi's trailor are nicknamed "Mansfield bars." It keeps automobiles from sliding under the trailor in a crash and beheading the car driver. While Jane Mansfield was not decapitated, the concept stuck.