Anyway, I think that Reckoner's point is that over time fans of any particular entertainment medium will get used to its distinctive strengths, weaknesses, tropes, and most common-style of stories. For a lot of people, this makes them more tolerant of certain weaknesses, but it also means it takes more to truly impress them.
But personally, I found Tari Tari different enough for reasons that I've already elaborated on in this thread, so I don't really feel a need to repeat myself there.
I will say, though, that "Slice of High School Life" anime has
really been explored as much as it possibly can be. For this "genre" of anime to stand out going forward, it's going to have to get incredibly creative, imo.