Also remember that correlation isn’t causation. Trust me, every autistic person in the West has heard all about how we just need to adjust our gut biome and suddenly we won’t be autistic, or we just need to go vegan, or any of a thousand other wonder cures. These cures have been touted since the 1900s, and the people they “work” on are generally agreed to just have learnt to mask better because almost every “treatment”, no matter how benign, is horrible to deal with.

The research shows a decrease in symptoms after the procedure and nothing more or less.

It doesn’t say anything about gut disorder or why they could be linked.