Most package.jsons I see have semver operators on every dependency, so patches spread incredibly quickly. Package namespacing is not enforced, so there is no way of knowing who the maintainer is without looking it up on the registry first; for this reason many of the most popular packages are basically side projects maintained by a single developer*. Post-install scripts are enabled by default unless you use pnpm or bun.
When you combine all these factors, you get the absolute disaster of an ecosystem that NPM is.
*Not really the case for Axios as they are at least somewhat organized and financed via sponsors.
Forest > Trees
> The OC is somehow under the illusion...
Avoiding package managers with shitty policies is the silver bullet for this attack vector. I get that it can be useful in the moment to retract published artifacts, or update them in-place, or run some code after your artifact is downloaded, but all of these are false economies in our hostile environment.