“X is a word we made up. It doesn't mean much of anything at the end of the day.”
This has to be a candidate for the most unhelpful statement possible. If you are sincere about it, then why not apply it to every word in your reply and see where that leaves you?
I can't speak for the original commenter, but I would definitely say that "is this actually X" is a pointless debate for most values of X. If I understand what people mean by X, there's no need to quibble about whether it satisfies my personal definition; if I don't understand, I should try to clarify rather than just saying "it's not really X" and crossing my arms.