The author is saying that other HN posts are claiming their lone registration page is an "MVP" (hence quotes). He wants people to stop calling these MVPs, becau

The author is saying that other HN posts are claiming their lone registration page is an "MVP" (hence quotes). He wants people to stop calling these MVPs, because they are not, just as you say. He doesn't say that the landing page is bad, per se, but that it's 1. not an MVP and 2. not able to test the same things.