That’s why I had the question mark. I knew Florian Kaps went, but I thought he was accompanied by others. At the time, someone was posting a blog leading up to his visit. It was overly optimistic.
Yes, I also read that once the use of pack film for passports had been supplanted by digital or whatever, that was truly the end.
As for the “mess” - yes that was a problem and remains so even as I use it today. I can’t simply walk around with one of my Polaroid pack film cameras and make numerous photos conveniently. I’ve been known to take a small bag with me to hold the peeled-apart components. Two books I have on Dr. Land and Polaroid state that one of the incentives for integral (SX-70) film was that people were complaining about the mess from discarded Polaroid material in national parks, beaches, etc.