However, my HTML pages from earlier in this decade mis-render on certain browsers. Images overlay text, External links die. Internal links die because I forgot to check all of them. The move to https means that "modern browsers" force the user to explicitly type 'http://...'.
Specifically
(1) Latex really is better at rendering math, especially when I need to create special character combinations
(2) PDFs are "irrecoverable" (my site also publishes the latex and you can run detex to strip the latex
(3) HTML "texts" require me to keep my browser open, which is challenging considering MS reboots my machine once a week and Firefox simply stops working after a week
(4) I need the referenced papers to "render identically", especially when the are several decades old
(5) You can do animation in Latex. As for "deeper comprehension", most of the papers I read are barely at the edge of my understanding (which I why I'm reading them). I print them out to do hand markup. Did you ever try to print an HTML page?