> At the peak of its popularity, Flickr was an interesting glimpse of the coming age of algorithmic homogeneity. In the mid-2010s, most of their top photos looked basically the same: heavily shopped, oversaturated HDR landscapes.

I agree with that. And then I moved to 500px, and it was the same. Started off promising, became very homogenous. Landscapes like you say, and the People sections were heavy with Eastern European semi-soft focus nudes in nature.