In this video, Digibro argues anime's international appeal is that, whereas Western TV including its animation is designed for financial reasons to meet a target demographic's existing interests, anime can be more diverse and give us "something that we never would’ve known we wanted". I'm sure I've simplified the argument (transcript here), but my understanding is that Digibro feels financial motives haven't homogenised anime as much as they have the animation of other nations. But why would that be so?
Anime is very homogenized and always has been. If you were a fan during the 1970s you could pick among a dozen flavors of different anime and that was it. In the following picture, each cover represents a different franchise.
Nothing much has changed since then. Only there are more flavors of anime now. But new anime are all derived from some older anime and the more you watch, the more you realize all the similarities.