A careful reader will notice that in those quotes no one is saying there isn’t presence or contamination, only that it’s nothing to worry about, is not harmful to people and isn’t on the official list of stuff the epa looks out for.
I genuinely don’t see the big deal. Crazy people have been right about stuff before. You figure out if they’re right by investigating that stuff rather than dismissing it out of hand. Including the crazy people claims in the big water study looking for a thousand other things is a good way to save money on lab costs.