Bae'zel
Hero
5E D&D has has flaws (I mean, c'mon, of course it does, it isn't Mythras), but this internet hyperbole is a bit much. "Most fragile"? "Breaks easily"?5e is the most fragile edition of DnD yet. By that I mean, it supports a single, very narrow playstyle and the system breaks easily if you try to tweak it to something else. To make it work you have to go with a complete overhaul, like Shadowdark.
There is no bigger contract to me than 1e/2e and 5e. You need only look at the proliforation of genres and settings supported in the 2e era to understand how flexible the system was. It supported everything from gritty Dark Sun like play, to Space Super-Heroes of Star Jammer. The only real varience in 5e is what color capes you want your supers to wear.
Granted, I do find it crazy that people use 5e for Cyberpunk, Film Noir and Call of Cthulhu, but as a system for "Fantasy"? yeah I've made it work splendidly with minor alterations, usually borrowed from third party 5e games like Adventures in Middle Earth and Brancalonia.