EzekielRaiden
Follower of the Way
Though I find this reasoning is used, nowadays, to never bother designing worthwhile rules in the first place.Yes it does. That's why the system submits to the DM. They know that trusting in a DM's judgement is the best way to have a good gaming experience.
"This thing is much too specific and contextual for us to design, it is genuinely best for the DM to work out the details herself" is fine; 13A does that and I am all for it in the few places it shows up.
"Eh, things might work differently at every table, so this basic thing everyone will use and depend on can be left without any real content in it, they'll figure it out" is not fine.
Recognizing the limitations of system design is good. Simply not bothering to design because the DM can figure it out is bad. 5e massively favors the latter, not the former.