I recommend this video to look more into OSR philosophy regarding the rules: https://www.youtube.com/live/bCxZ3TivVUM?si=aZ-y2U_AVjn9a6Ua
5e is pretty light though, and in most cases too light so the DM has no idea what to do and has to resort to “Rulings”.
PF2e on the otherhand is crunchy AF and its awesome like that. It doesn´t have extra rules for everything, its all based on the same framework, which is pretty awesome.
PF2 is certainly easier to run. But tell me when it becomes a RPG, it’s basically a video game system ported to tabletop. Everything is about the builds, not the characters.
What would it take to make it a RPG? Some characters are flawed in certain things while excel at others. But what you want your character to be, its in your hands due to how you build your character. That´s part of your character, same goes to the backstory you may have developed and inform your build.
Well they could stop gamifying RP and exploration so players actually get into character instead of just rolling dice. But that’s a pretty fundamental shift, so they won’t do it.