Ok, but in that case you also shouldn't hold an opinion as to whether or not it's a sound investment. The discussion here is concerned with people who hold strong opinions based on poor understanding and reasoning.

I could use your logic for anything really. How about vaccines? "I don't understand medical science or chemistry and the ingredients sound super scary. No vaccines for my kid!"

I'm not sure I understand the counter-argument about vaccines. The crucial point there is herd immunity, which doesn't apply to many other fields.

You're only reasoning would be "I don't understand this thing, so I'm staying away." You can reasonbly hold an opinion as to how the investment will perform if you don't understand it to begin with.

That is not the view of the people described in the article. These people throw around falshoods and severley misunderstand the subject they claim to be well informed on. That's the entire point.