OK, but to me a "lockfile" is a file whose existence signals that some resource is locked.

https://en.wikipedia.org/wiki/File_locking#Lock_files

When I saw the title "We shouldn't have needed lockfiles", I expected something about preferring some other mechanism for resource locking.

More generally, I see a lot of articles that talk about an issue in some language or framework that don't mention that context. Just adding "JavaScript" or "NPM" (or whatever) in the title or near the top of the article would be very helpful.