The two main ones I see are, 1) statements like, "I think it's ridiculous to think the stars control our fate." Which, they don't. While there is a branch of "naturalistic" astrological rooted in Aristotle's classical elemental ideas, virtually no one uses that model, and the prevailing thought these days is the movements of celestial bodies are more like symbolic markers. You never see anyone accuse clocks of controlling time, for instance.

And the other one is the perpetuation of the idea of each person's sun sign essentially determining their entire personality or whole events. The sun sign is obviously a large variable, but in actual astrological practice the natal chart factors in the total state of the entire solar system with an honestly staggering number of variables. That's not the whole story either, because people change over time, and astrology has methods for forecasting those changes by producing whole charts at multiple times and places.

Which, if you think the premise as a whole is still ridiculous - that's fair. I'm not trying to defend astrology here, just saying that people can at least try not to perpetuate stereotypes.