I know this is not the way it's done on HN, but since this isn't my thread I feel like I can throw in some amicus support for your side here by pointing out tha

I know this is not the way it's done on HN, but since this isn't my thread I feel like I can throw in some amicus support for your side here by pointing out that an N of 30 is a sort of foundational number in stats, although it's not a magical number as there are some pretty rigorous maths behind it. But it's not like social science people decided that an n of 20 or 30 was a good number to use because that's conveniently what they likely had access to (roughly the size of an undergrad classroom) for field data. and they didn't come up with it anyway), this is a number you're going to find in chapter 1, page 3 or 4 of any introductory stats text.