I first heard of him when he referred to advocates of Eteplirsen as Advocates of Snake Oil Salesmen (I took that as an attack on families). While I wouldn't disagree on evidence being weak for E I thought that statement personal. I actually then looked at his twitter feed saw he had a link to his (extremely promotional) website and a recent book. Seeing him tweet against everything from anti-statin, anti-immunotherapy, anti-tumor sequencing, anti-accelerated approval, anti-surrogate endpoints, etc. I certainly don't have his medical knowledge/background to refute point by point what he tweets but a few things are obvious: 1) He seems to cherry pick to support his cases 2) He is extremely self promotional/absorbed!