Aspects of modern HTML/CSS you may not be familiar with

> You are allowed to just make up elements as long as their names contain a hyphen

RIP any semblance of using meaningful tags for machine readability I guess.

it's a lot more readable than a bunch of divs

if an element that semantically fits your needs already exists you don't need to make up an element in the first place

And even if they don't contain a hyphen! You can just <use> <anything> <you> <want>

What's the use case for machine readability these days?

Hmmm, I thought you had to register these with JS first, but my browser seems to recognize them.

The soft-requirement for hyphens is a form of namespacing: nothing precludes whatwg from adding <use> or <want> elements to HTML in the future, and that would conflict with and possibly break your page.

We could have that with XHTML+DTDs...

To prove your point, <use> already exists although in SVG. https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/E...