I'm in a similar boat as in the first quote: Have used emacs for decades, glad that I do, can't imagine switching... don't think I would recommend it to anyone new, unless they are really open about learning something entirely different. Emacs seems to be in the same position as LaTeX: Outdated paradigms that would probably need an entire redesign from the ground up to start "making sense" in the modern world. This s…
For LaTeX a large part of the appeal is to get a template and be able to respect whatever arbitrary formatting requirements.
Someone could build a layer on top of existing LaTeX to add a more modern language on top of it and have it expand to LaTeX.