In my opinion, you make an astrologer aspect out of anything. All the pluto aspects would lead astrology. And then you could say Neptune aspects are astrological too because Neptune is spiritual. And obviously Jupiter cuz higher knowledge. Uranus aspects could work because it's advanced thinking and not accepted by all.
Literally everyone will have an "astrology aspect" whether they study astrology or not.
I think people who turn to astrology or get into it were either introduced to it, brought up with it, or were seeking alternative spiritual/mental healing.