Think anyone has ever done actual research on astrology stereotypes? What group would be willing to invest the time and money? Traveling around the world to collect data and observe individuals on a personal basis? It doesn’t happen because it’s too much work.
Far easier just to make it up. Astrology is magic based. Part of being a believer is not to have doubts. Astrology is better than science, that’s why it needs no proof.
Gauquelin work, to some, seems the best if not the only 'evidence' for those that promote astrology. Though not remotely approaching a consensus of opinion among the community. Has Gauquelin's results confirmed the stereotypes or rejected them?
The scientific method was created to eliminate lies. The core is repeatable results by anyone along with claims being falsifiable. When a claim by a scientist is published, a target appears on his/her back. There are many of scientists that are wrong or plain lie. This happens often. How many times in astrology? Well, if they don’t publish results on alleged years of study, none. A simple search for such results turns up nothing,