Earlier quoted context omitted.
That comes at a cost of lots of volunteer hours. I’m not sure if it would scale to NPM’s massive size.
npm's size is not independent of its curation strategy. This can be construed as a good or a bad thing.
All other "modern" (where "modern" is "last 20 years") package managers have zero curation.
Perl, Python, Ruby, Go, Rust, Dart, JavaScript.
You say: "if they had curation, they would be better".
I say: "if they had curation, they would have lost to a competitor that doesn't have curation".
People care about having more packages much more than abstract fears of security or quality of those packages.