with the decline of organised religion amongst Western Europeans, astrology is one way they fill that void
if astrology doesn't float your boat, there's always witchcraft and tarot, or crystals and alternative medicine. or if you're less inclined towards new-age horse you can believe in QAnon and cryptids and Graham Hancock and ivermectin. basically there are always going to be people like this, and astrology - as of now anyway - is a harmless, if extremely stupid, outlet for it
perhaps in 60 years it'll be death camps for Scorpios and I'll have to eat my words, but that seems unlikely