1. The press release for the study and this article have completely opposite conclusions. At least the author is relatively upfront about this, but he characterizes it as if the press release is just a cautious, sciencey take on the results. By the way, it's not just the press release, but the abstract/paper has pretty unambiguous language saying findings "failed" to support such hypotheses.
2. There's a Mother Jones chart that uses data from the study, but it's cherry picked. They take a few cohorts, ignore the (very valid) adjustment the study authors made, and the chart itself is IMO misleading because when you scan it, you're likely to mush up the highs and lows of each cohort to make it look more linear than it is.
3. Looking this guy up, he's clearly an advocate around the lead crime hypothesis, so it should be understood this guy has an angle.
So, yeah, this headline sucks.