Carefully curated and DIY are pretty much at the opposite ends of the spectrum. The DIY ethos pretty much comes from punk rock and early indie music scene. It was about the opposite of curation - putting the raw unedited stuff out there.
For what it's worth I think any group should be expected to make the game their own. I just think that should be a communal process. I believe that the experience is best when we create it together. The GM is a player like any other player.
When I play roleplaying games I expect to be involved on a creative level with a group of peers. I do not want a hand crafted experience that you think is best for me. Same with rules and stuff.
Two things-
First, I disagree with the distinction you are drawing between "curated" and DIY. DIY ethos in D&D incorporated some of the punk rock ethos (70s!) but it certainly didn't come from it. After all, Gygax and his contemporaries were many things, but unlike Sheena, they were not punk rockers. Instead, they were very much a part of a
hobbyist culture. Whether you are discussing wargaming, or model rockets, the hobbyist DIY subculture was strong in America, and manifested in a particular way when it came to the more ... nerd-ly pursuits. And part of that DIY was the ability to curate- to pick and choose those things that you wanted.
As such, I think you misunderstand the use of curation
in conjunction with DIY; the DM is not simply regurgitaing the mass-produced content without care, but is selecting, organizing, and presenting official and 3PP content for use in her game, along with creating (DIY) additional content both ahead of time and extemporaneously. It is both curated
and DIY. If it were not curated, then the game would always run "as is."
To the extent you want to invoke the punk ethos, the idea of running the rules that you are given by your corporate overlords seems very much against that ethos.
Finally, while not exactly on point to this, in the before-times I had the pleasure of seeing Glenn Friedman and Guy Picciotto discussing the photographic work of Fugazi; a lot of what people think of today as the "punk rock" and "skateboard" ethos is actually ... carefully curated photographs.
As to the second thing, it has become the seed for thought, and but will require a new post!