Yes, FMT is super experiemental. The point of the blog/website is not to convince people to buy poop, it's to find ideal stool donors who may be able to cure a variety of diseases.
Maybe FMT is a good idea, but it’s still too unknown for me to accept it.
It can't become "more known" unless a highly effective donor can be found. And such a donor can't be found unless people start helping...
I don't think FMT is appropriate to regulate as a supplement. The ingredients of supplements are known and standardized. FMT is an extremely complex and dynamic ecosystem. Yogurt is a handful of known microbes in a highly controlled environment. FMT vs yogurt is like the universe vs a zoo.