[omnimus]

To be fair. It's not like the algorithms are not known and haven't been test implemented decades ago. The issue has always been performance. When you have composer that considers paragraphs not just lines it can get slow very quickly. TeX is compiled it doesn't matter.

I can already see when browsers implement the TeX microtypography package, everyone starts using it and everyone will be annoyed how slow browsers, html and js are.

[tosti]

That's already the case thanks to a billion JS extensions and frameworks.