There is definitely this side of things online, you see it a lot in the cooking scene. Where someone creates something simple and unique, it gets popular, then everyone starts doing it as though it was their favorite.
There's unique content and then there's trending content
Dubai chocolate [0] springs to mind as a great example. It's everywhere [1] now.
0: https://en.m.wikipedia.org/wiki/Dubai_chocolate
1: https://www.lidl.co.uk/p/della-sante-dubai-chocolate-cream/p...
Eh, I'd say part of the problem with modern life is there is so many choices. Just go to a restaurant with 50 choices and one with 5, the experience with 5 choices is generally much easier and you're less likely to feel that you've made a bad choice.
I feel this is what trends are for a lot of people. Narrowing down the almost unlimited number of choices you have to something simple. But eventually the novelty wears off and people move on.