I think the disdain comes from seeing marketing outweigh science. What people really disdain are companies that offer snake oil in bad-faith, but they secondari

I think the disdain comes from seeing marketing outweigh science. What people really disdain are companies that offer snake oil in bad-faith, but they secondarily disdain the people who fall for it. The benefits of antidepressants are backed up with science; the benefits of faraday tents are not. Of course, it's still not really right to disdain people for being overly-optimistic to the point of being gullible.