There's something quite exciting happening with AVIF and progressive rendering.
Some recent patches let you provide custom 'frames' as progressive passes, so you can provide e.g. smaller blurry versions of the full image to use as a progressive pass.
Video
Cartoon: Octopus Prime.
Jake Archibald
Lar deSouza
I see this developer wanted to screw over assistive technology users, but ✨sassily,✨ so instead of a div with a click handler they used
<i role="button"><svg /></ i>