This is a game philosophy issue.
Do we want the rules to be more proscriptive, like they were in
TSR era was more proscriptive - lots of things were couched in terms of what your class couldn't do. Armor and weapon proscriptions, for instance.

(Just checked, apparently the 1e PH uses the word 'proscribed' 4 times, plus a bonus use of 'proscriptions' - I'm guessing most other eds don't)
Prescriptive? maybe?
Anyway, rules can be more or less functional, more or less complete.... and, well, attitudes can vary...
3e, for instance, had moar rules, but the big difference was the faith ...or something... the community had in their consensus vision of The RAW.
Or do we want the DM to have broad latitude, which is more likely to enable moments of Rule of Cool, but also opens the door for rulings a player doesn't like?
TBF, it's not going to be just 'the player doesn't like it,' in some aesthetic or selfish sense - tho, that's gonna happen, too. For that matter, Rule of Cool isn't going to be cool every time.
DMs and players are people, they're imperfect, communication is imperfect, they're going to disagree about off the cuff decisions some of the time.
There's no right answer, just what works for each group.
Ultimately, tho, it's not either-or. The DM can step up and Rule of Cool (or Yer Not Gonna Like This) any game, any time, no matter how P-scriptive/functional/complete it is or isn't.