I agree, even without project glasswing (that Microsoft is part of) even with cheaper models, and Microsoft's compute (Azure, OpenAI collaboration), it makes no sense that private companies needs to scan new package releases and find malware before npm does. I'm sure they have some reason for it (people rely on packages to be immediately available on npm, and the real use case of patching a zero day CVE quickly), but until this is fixed fundamentally, I'd say the default should be a cooldown (either serverside or not) and you'll need to opt in to get the current behavior. This might takes years of deprecation though, I'm sure it was turned on now, a lot of things would break. (e.g. every CVE public disclosure will also have to wait that additional cooldown... and if Anthropic are not lying, we are bound for a tsunami of patched CVEs soon...)

There are so many ways to self-host package repos that "immediate availability" to the wider npm-using public is a non-issue.

Exceptions to quarantine rules just invites attackers to mark malicious updates as security patches.

If every kind of breakage, including security bugs, results in a 2-3 hour wait to ship the fix, maybe that would teach folks to be more careful with their release process. Public software releases really should not be a thing to automate away; there needs to be a human pushing the button, ideally attested with a hardware security key.