IMHO we'd have seen the health effects more clearly if it really was. Currently, the research seems to only indicate some correlations.

Hard to set up a control group when literally everyone is exposed

Seems at least some anecdotal evidence here : https://www.theguardian.com/us-news/2019/may/23/chemical-col.... (admittedly , this is fairly persistent and significant exposure - more than the average person)

Wait and see, wait and see. I hope there's nothing much but..wait and see.