There have been hundreds of millions of people on ADs in the last 20 years (I was one of them until 3 years ago). The reason? They are given to people who are having problems.
And people who are not having problems do not commit mass shootings. There were mass shootings before the use of ADs became widespread. Also before video games, and the teaching of evolution in schools, and fluoride in the water, and blah blah blah, every other excuse the NRA comes out with.
And then after the article finishes, the quotee then goes on to pH balance, which has FA to do with ADs? Priceless.