and I'm saying: if THAT is what you call "works just fine", then the whole concept of a hybrid document is broken and it's great that we've abandoned it.

Why? How is it different from your suggestion of inlining SVG in an HTML5 document?

xhtml is the nazi party of the web. obsessed with purity, unwilling to mix with the unclean documents, and soundly defeated by history.

That's right, I just Godwin'd you.

So really, you have no argument, except for a distaste of XHTML. Gotcha.

It seems better to mix that with SVG than HTML5, since SVG happens to also be XML based. Otherwise you have a impedance mismatch leading to some weird corner cases.

my argument is that you might be able to make it work through a lot of effort but you can't actually use it in the real world so it's worse than worthless.