Most of them are held by very few people, so they're bad examples.

A few of them are not obviously wrong so they're also bad examples - for example polygraph might as well be an useful truth finding device, there's just zero evidence for it; or psychoanalysis might as well be useful as therapeutic device; or some races might be "superior" to others in some meaningful sense like intelligence etc. I'm not saying any of that is likely to be true, just on completely other level of wrongness than God and marijuana criminalization.