Yes. The Greeks are literally why you have to pretend to respect people that talk about Pisces in ascendency or whatever, and their astrologers were their astronomers, they recognized the difference between observation and divination but used the terms interchangeably nonetheless.

There are some famous examples who doubtless thought the mysticism was nonsense, but it was what paid the bills so they told their patrons what they wanted to hear and then went back to their math and charts.