For instance, they make the claim (again) that the PET used to bottle water is dangerous in itself and I thought that had been debunked before.
What are you referring to? I don't see PET or polyethylene mentioned anywhere in the article. They did breast cancer cell proliferation assays (rather frightening results, actually) but they did not claim that the chemicals came from the bottle. Actually, the wording implies that these were contaminants already in the water.