My friends and I started playing DnD during COVID. We're all at least normal intelligence, college educated people (I even work in a job where I regularly research federal regulations, so I'm used to navigating complex rules). Our biggest complaint was how obtuse and difficult to pin down some of the rules in this game are.

Six of us spent a half hour trying to figure out how darkvision works, and the answers we found online didn't seem to match up with what we were reading in the handbook. You would find something mentioning darkvision, but it wouldn't explain how it worked. Then somewhere else would say something different about darkvision. It seemed like you needed to go to multiple different sections of the handbook to piece everything together. We encountered multiple instances of this.

Our one friend defended it all saying it's deliberately obtuse to allow for DM flexibility, but most of us disagree with that approach. The rules should be explicitly stated, and then a caveat added that all rules are flexible if the DM wants them to be. There should not be a debatable way to play the game, as far as official rules are concerned. How you bend the rules is entirely up to you.