What the hell is that even trying to say?

As for the absolute, eternal, undying truth and power that people give the zodiac: Look up "proper motion." It's the motion of stars across the night sky - if you do a projection of proper motion of zodiac signs, they're completely unintelligible looking back 20,000 years in the past or ahead in the future. They're completely arbitrary choices as to what they look like or what effects they supposedly have on our world.

It's like saying, okay, these random stars, hundreds of thousands if not millions of light years away, somehow align so that from our point of view from our little insignificant planet they look like dogs and lions and scorpions, and that because of these loose stick figures in the sky we can see how the future is. It's pure mysticism with no basis in reality.