[croon]

The implication you are pointing at still an assumption.

If we can't assume that Hollywood stars or concert violinists are intelligent (even if not all intelligent people can be those things), then why would it naturally be so with financially successful people?

The examples still make sense under the premise that the assumption is off.

[jesuschroist]

Sure, it's an assumption.

But saying that all concert violinists are intelligent is something different than saying that everybody, who is intelligent, is a concert violinist.