If Poindexter were in sales or if his goal was to promote the company or a drug, them I agree, he would be damning with faint praise. However, investigators and clinicians tend to understate their position. Rather than, "Drug X will revolutionize the treatment of y" (that being commercial-speak), one is more likely to hear, "Drug x should be efficacious for a population of patients with y". Or, "your tumor has a favorable prognosis" rather than "you're cured".
I'd be suspicious if a member of a clinical advisory group appeared indistinguishable from the marketing department.