Kiwix will parse the en_all .zim file just fine… I’ve got and tested it at this point, the issue I was having is that I couldn’t get Kiwix’s own link to successfully download the file.

Thank you so much for this. I have been trying to offline Wikipedia for months but the torrent links on the kiwix site are broken or something. They stall out for me in the first 10m everytime. The download from your link is working perfectly.