My account is a several years old. HN is turning into Reddit. These one-liners really are a lot more common than they were even 2-3 years ago.
The meta-discussion has some substance to it IMO; it conveys at least some information and might suggest some actions to take. The original comment has literally none.
(Meta-discussion is marginally poisonous to productive discourse, and on an ideal HN this whole thread would be downvoted, but one-liners like the original post are a much bigger threat)
If your ideals can be so easily threatened then perhaps one-liners are not the problem.