A slow update: I got a can of the hottest lacquer thinner I could find now (which ain't much compared with the stuff I've used for cleaning carbs for years, now also outlawed) and mixed it 50/50 with the stripper, mostly because the stripper is viscous and will stay on the sides of the tank. On 12/6 I applied it 3 times, again on 12/7 and 12/8, and it has lifted a strip about 3" wide and 1/4 the length of the tank. I can scrape some of the other paint away now, which I couldn't do until today, with a stiff metal scraper. Tough to do without scratching the tank: I might end up with a new can of Bondo before this is over...
This is outrageous. How will contractors repaint anything now? The costs will be outrageous, as they will be forced to replace whatever the structure is that needs a color change for lack of being able to remove old paints. How will cars, trucks, tractors, cement trucks, etc., get repainted now? It will require they be fully sandblasted, which is hundreds of times more dangerous for inhalants than any form of MEK application. I worked for a couple of years in a fabrication shop that built heavy equipment on big ('huge' is a more fitting word, here...) truck chasses, stuff like airport snowblowers, earth moving trucks, city buses (those were the smallest things they built there), standby generators (half-gigawatt size) for skyscrapers and hospitals: all of that equipment needs paint, and frequent repainting, from the rigors of use. MEK paste (sprayed on) was the primary means of paint stripping, followed by sandblasting (and lots of air-powered scrapers & sanders). While we could tell in the offices when MEK was being used by its scent, no one there ever got sick, nor grew extra arms or legs, nor got hurt, nor died from it.
WAY past ridiculous, this sort of overreach is beyond outrageous.