To me at least this appears to be a smoking gun for the creator not being able to function in good faith. Whether that's intentional or self delusion, who knows.

From the page itself, "A modern auto paint shop emits volatile organic compounds (VOCs) during primer, base coat, and clear coat application. The Bay Area AQMD makes permitting a new paint shop nearly impossible. This is THE classic example of what you can't do in CA." This point is trotted out and reframed multiple times on the page but it's literally self contradictory. It's not something you can't do in California, it's something you can't do without approval in the Bay Area Air District.

It's not a good place to be doing such an activity, as the area already can't successfully keep the air healthy enough to stay within federal limits due to environmental factors that trap particulate low to the ground. If you're at all familiar with the area you know concerns about air quality are not overblown and. Go further away from people or meet strict VOC regulations if you absolutely need to be doing that kind of work in the area, seems completely reasonable to me.