I think it's fine to not dismiss something out of hand if you don't know anything about it (as you say that you know nothing of astrology), but if someone _does

I think it's fine to not dismiss something out of hand if you don't know anything about it (as you say that you know nothing of astrology), but if someone _does_ know something about it, I think it's fine for them to be dismissive of it if they choose to. It's similar to saying "I know nothing of homeopathy, so won't dismiss it" (a fine position), but then you can't critique someone who _does_ know something about it, for being dismissive of it. Of the people I've seen whole heartedly engage with astrology, it's never been as a tool for introspection (directly or sideways), but as a way to justify poor behaviour.