Hi! I'm the creator of the site. I'd just like to say thank you for posting this and for everyone that took the time to visit the site and/or my YouTube channel! Seeing people get value out of my content is what really makes the effort worthwhile.
Thanks for clicking! Clicking 'use IPFS' makes all the images point to the local IPFS gateway on 127.0.0.1:8080, so browser can get the images from people who pin (distribute) them, like in a bittorrent. But even if you installed it, it wouldn't work because currently I don't pin image files on IPFS. IPFS daemon consumes a lot of ram and cpu resources, so I decided to shut it down.