All it really takes to be "an investor" is to have money or be able to get money. There is no prerequisite of intelligence, business sense, product taste, operations wisdom, or sound judgment. Although they all seem to act as if they magically have these, as if the Investor title suddenly imbued them with these traits.

The only thing stopping me from being an angel investor is that I don't have $1M burning a hole in my pocket. But if I did, suddenly I could sit down in a conference room, put a polo shirt on, dangle the money from a fishhook, and people would take what I said about their business idea seriously. It's such a joke.