I wonder if the entire thing with D&D isn’t that there’s a situation where the mechanics Excel, but it’s become a thing unto itself that shifts and evolved along the rest of the industry.
It has to bear enough of a relationship to the previous generation to be familiar, comfortable. That’s a place I think 5e excelled, it has enough touchstones to earlier editions I enjoyed, the customized nature of the kits and the more simplified mechanical system that 3e tried to create.
Dungeons and Dragons is the best system to play a game of dungeons and dragons. It’s not as much a loot grinder as 3e was, you can skip magic items in a lot of places. It’s there to help shepherd you from a farm hand to killing the queen of evil dragons to save the world. It’s designed to embrace the wild strange world that’s grown up around it.
The design limits are flatter than some other systems, but they’re broader. A mysterious shadow mage and a elven noble warrior mage?
D&D is the kitchen sink. You can make crazy in other systems, Fate, etc., but that’s pulling ingredients from the pantry and cooking from scratch. Dungeons and dragons is seeing what you have in the fridge and cooking.