Thanks for this article.
I think there is still an application where LaTeX doesn't have a better replacement : generating big pdf documents / documents to print.
You can argue pdf documents and print documents are from the past (and I would agree) but since a large part of the industries are still using pdf, there will be a need for a "language" to generate big pdf documents with a good layout and which print well (particularly with a good handling of page management, not cutting the document anywhere since it was thought to be a web document not a pages-based document.)
I agree, there is a need for printable documents, preferably in PDF-format. But I don't think they are something from the past. And I agree that HTML is not the solution. Instead of printing webpages one can optimise HTML for printout but some viable parts are (still) missing.
I just think there should be something better than LaTeX which could be based on HTML. We should not settle (any more).
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