/meta
On this particular issue, I will go further than my parent and say this does not represent a significant step forward in the scheme of things. The problem being solved here is largely akin to a problem I had to solve 15+ years ago with Vanilla JS. It is positively nuts that we are celebrating a "fix" for it all of these years later, and that we are investing so much time on what should be routine by now.
Anyone who is genuinely excited about this should sincerely be asking themselves if it's a good thing that a lengthy post/fairly involved component for sanely displaying images in a browser is the state-of-the-art for Webdev in 2018.
Yes, I get it: browsers don't do x or y. So, yeah, let's add more libs, more frameworks, more shims, more specs...more, more, more. It's almost self-parody by now. Look at the average Webapp of any semi-significant complexity. It is such a hodge-podge of code, languages, technologies, build steps, etc. that it's a wonder any of it works.
I think it's time we all took a step back and ask, "what are we doing? Is this the right model? Is there a better way?"