Some of the images do not load when Javascript is disabled because the web developer has chosen to include three different-sized copies of the same image and use Javascript to emulate a "zoom" effect.

Quick fix: remove the <noscript> tags

   curl https://alexellisuk.medium.com/upgrade-your-raspberry-pi-4-with-a-nvme-boot-drive-d9ab4e8aa3c2 |sed 's/<noscript>//g;s/<.noscript>//g' > 1.htm

   firefox ./1.htm

Note you can still zoom on these images. Right-click and open the image in a new tab, then zoom. Or you can open the larger versions in a browser tab and then zoom. The full URLs for all different-sized copies of images can be seen with view source.