I understand the frustration and the feeling of being insulted, but I have some perspective from having to deal with users of software who really are that incapable when dealing with computers in general. A surprising number of people exist who don't...
I also find the new download behavior very annoying after more than a decade happily using Firefox. I get the problem that is being addressed, however. My suggestion would thus be to add a setting:Use system "Temp" path or specified path for "Open fi...
