There is a huge difference between Excel and HTML: the former is Turing-complete (in addition to containing Turing-complete scripting language(s)) and was like

There is a huge difference between Excel and HTML: the former is Turing-complete (in addition to containing Turing-complete scripting language(s)) and was like this for as long as I remember, while HTML is not. I guess CSS nowadays may be Turing-complete (?), but HTML is most decidedly not. That difference means that it's orders of magnitude easier to "abuse" Excel to do some things it wasn't designed to do than to do the same with HTML. I seriously wonder if the reliance on HTML to this day is not a kind of "job security" thing for web devs (like myself, btw)...