Right, you can legally redistribute the software, but can you ethically do so? Some people have complained about the bad precedent set for allowing left-pad to be reuploaded again after it was deleted, and the reason they complained is because the developer has lost control over the fate of his own package.
These people can't complain too loudly, as the author in question did indicate that he was willing to give ownership of his npm packages over to someone else. But you could easily see a situation where a developer would want his stuff deleted and not be accessed, period. Why should this request be refused?
The idea that the developer has lost all moral rights whatsoever to his/her work just because they attached a LICENSE text document feels wrong to me. Just because a license says you can 'do whatever you want' doesn't mean you should do whatever you want.