This is truly odd. IPFS and Nostr seem to be such a good combo... At least on the paper.
Discussion
Maybe is the browser, I'm just checking with librewolf now and.. 
Yes is blurry according noStrudel default settings without login, but are loading without issues.
So here it works because my URLs are having the image extension directly in the path and not as parameter. That would be the default Nostrudel and Amethyst functionality... The other thing is why it does not work in Chrome. Maybe they are blocking ipfs headers. I will have to test it.