There's a spectrum of play that runs from strict rules-as-written to complete calvinball. Calvinball can be fun, but it's not really a transferrable game. It's very particular to that moment and that group.

Sometimes people post wacky calvinball moments (eg: rolling damage against the floor, a free action to eat tiles, a +2 bonus to hit) as if that's baseline RAW DND. It is not. Many tables would be like "wtf, that's not how this game works". So it can be kind of weird when it's presented as obvious, as if it's raw, when it's just make pretend.

Imagine if the post was "we were playing basketball and I missed the shot, so I got in my car and drove up close so I could jump off the roof and dunk". Like, wacky story but not how you're supposed to play the game.

Furthermore, DND specifically is kind of bad at creativity. It's very precariously balanced, with specific rules in odd places and no rules in others. Compare with, for example, Fate, which has "this thing in the scene works to my advantage" rules built in. DND is almost entirely in the hands of the DM.