I tend to think of tarot and similar systems as being akin to a Rorschach test: What you see in the cards is sort of a projection from your subconscious. That doesn't mean it's useless or meaningless. It just means it's not "magic." It's more like a psychological trick to help you figure out what you think is going on.
Astrology likely began as observations about a relationship between events in the sky and events on earth at a time when people were much more exposed to the elements and there was less light pollution. You looked up to the sky and saw the phases of the moon and pattern matched to tides, wind patterns and other things on earth that modern science has affirmed really are influenced by the sun and moon. You began keeping records and talking about observed associations.
And then at some point it kind of jumped the shark and now people imagine they can predict when you will metaphorically "win the lottery" (often without even buying a ticket) instead of something more akin to predicting the weather.
At first glance, this appears to likely fall in the "Rorschach test" camp.