They were being pedantic, in that `package-lock` is a thing, and `package.lock` (which is the comment originally said) doesn't. Because apparently a typo invalidates whatever experience you have.
You seem to have missed that my comment was a response to pedantry. It was not, in itself, an attempt at pedantry, let alone pedantry unprovoked.
If someone writes a comment intended to come across as knowledgeable about something (NB: in service of trying to downplay the experience of others, including the person they are responding to), but their self-report gets something as wrong as referring to package-lock.json as "package.lock", which is in the ballpark, but far enough off to be weird, then it raises questions about just how much experience they actually have with that thing (including and especially relative to the person they were trying to contradict).
> Especially when the old project in question is not yours
Then it falls out of the stated scope of "updating my small website once every 5 years or so"