"What structure does X have that shapes Y?"
When the whole 'rules elide' discourse was brought up again last year, I came up with a metaphor that I like for what rules and books do, because I really couldn't get on with rules elide fully.
A game/book/set of rules is a photograph. The photographer made many decisions when taking that specific photograph. They framed the image so certain elements are present in the photo and certain elements are not present. They chose shallow or wide focus for the image. Something in the image is in sharp focus, and there will be things on the outer edges that are less sharp. There may be specific patterns, lines, shapes, etc. that draw the eye in a certain way through the photo.
These are the rules, and they present a picture of what the game is and does, but that picture is not totally divorced from the context in which it was taken, and what is not in frame is often as important as what is in frame.
I am free to imagine what the unseen world around that small photograph looks like, and that is often where a lot of beauty in a photograph lays. That's where my imagination goes. The photograph provides the structure for my imagination to do what an imagination does, and different photographs will provide unique tramplolines for my imagination to bounce in different directions.
To relate this to the issue of D&D supporting or not supporting certain types of play, we have to look at the elephant in the room. It's the same elephant in any room D&D is. The giant elephant: The fact that D&D has 90% of the ttrpg marketshare. The books which make up D&D's rulesbase have an earth-sized context around them, which dwarfs every other ttrpg. This is Critical Role, Dimension 20, and every other D&D podcast. This is the overwhelming amount of content on youtube that shows people how to play D&D, and how to build their characters. This is the massive third party publishing ecosystem, which has content for every style of play one could want (to varying degrees of success). This is Baldur's Gate and every other D&D video game.
Each of these things outside the picture frame of D&D 5e's books provides support for other styles of play. D&D is an outlier, and probably should be treated as such in this conversation.
Other games, with contexts that aren't the size of a solar system, obviously have foci that offer support for different styles of play. It'd be silly to bust open Call of Cthulu to run a medieval fantasy hexcrawl focused on intricate melee combat. BRP is right there. Mythras is right there.