I’ve updated the downloader to include the changes that @chriskyfung had worked into their fork, so it now downloads both your regular and archived projects, the former being put in an ./active dir, and the latter in an ./archived dir. So you should actually get all your projects now, rather than only your active projects.
The code has also be moved to a real GitHub repo rather than a gist, over on https://github.com/Pomax/glitch-bulk-downloader