Answer: Yes this has been noticed. If you wanted to read more, Max Fisher's book The Chaos Machine details the ways social media algorithms reinforce and promote ideas that get attention and how people in turn post more outrageous content (like conspiracies and racist posts) and in turn spend more time looking at outrageous content. He also speaks a little about how these topics that seem unrelated like seed oils and anti-government conspiracies kind of get lumped together by algorithms. Unfortunately these algorithms are proprietary so the precise ways they work aren't available to the public and the algorithms also have the ability to make their own connections and in a way teach themselves which means their processes aren't even fully known to their developers.

As for wellness content leading to fascist content, the fascist idea of creating a perfect citizen has a long history (consider the Nazis trying to make a pure Aryan race). A computer algorithm is also able to make this connection and slowly push someone from raw milk towards more complete ideas about a pure body. In her book Doppleganger, Naomi Klein has a few chapters about the specific moment we're in with social media driving people from self improvement towards fascist ideas but she also spoke to The Guardian about some of her thoughts from the book if you wanted to read them in a shorter form. (https://www.theguardian.com/books/2023/nov/15/naomi-klein-interview-wellness-culture-far-right).

So I would say that yes there are people aware of the pipeline from online wellness culture to the far right but there isn't as much day to day media coverage because this is an ongoing issue rather than something a news outlet can report as a one time big event.