Joel has created a successful company that is apparently fun to work in, have shipped several working and commercially successful products and made a service for human-kind by designing and successfully launching programming Q&A site that doesn't suck. Plus his writings inspired a generation of programmers to start companies, just like PG's writings did later.
Contrast this with Extreme Programming that OP embraces as a third option compared to duct tape programming vs analysis-paralysis. I was very excited about XP when I was young and inexperienced programmer, but nowadays XP sounds much more snake-oil salesmanship to me than Joel's opinions. Did original XP gang work in startup like environments, or were they actually solving problems (payroll systems) that they and many others had already solved? And Kent Beck seems to be still working on jUnit (and trying to find a way to monetize it), not shipping new products.
My kudos goes to Joel and duct tape programmers around the world.