I view this website with Firefox, and the thumbnails and images (eg Monerochan Memes) don't display because they are webp. I have the "Don't accept image/webp" add-on active but this makes no difference. Is it possible to configure the website so another inline image format is available?
I'm using firefox and see webp fine, may I ask why you have an add-on to block them? As far as I can tell, webp is massively superior over other image formats when it comes to low storage/data requirements for webhosting.
I'm using Tor Browser (Firefox) with "Safer" settings for this site, and I can see webp images too. If you don't want to change the add-on settings of the default system browser for some reason, using a stand-alone Browser (like Tor Browser) instead, just for this site, might be an option too.