A similar comment deriding your hypothetical financial analyst would be called pompous if they listed credentials, claimed the analyst was uninformed, then decl

A similar comment deriding your hypothetical financial analyst would be called pompous if they listed credentials, claimed the analyst was uninformed, then declined to say anything more (assuming other commentators were similarly uninformed). Saying "you're wrong" and leaving it at that isn't very helpful and most people will simply ignore the statement.