A common observation among osr players is that the lack of extensive rules encourage/require the table to come up with ad-hoc rulings. I don't know if that's a "credit" to those editions (e.g. b/x) or just a result of how they are written. I think 5e was aiming for this, though as mentioned it probably also has too much exception-based bloat to do it well. Still, I think it's possible to design a game to intentionally have some empty space that encourage/require players to come up with some ad-hoc decisions.It's left to individual GMs to come up with and implement on their own, with no help from 5e. I think it's fair when talking about 5e to note what 5e does, and not give 5e the credit for not stopping a table from coming up with their own things. They didn't need permission from 5e to do this.