> find them entertaining

I also find them entertaining. That doesn’t mean I believe them.

> The explanation is very simple: they simply didn't think it through

Something I rely on to predict the future is the kind of thing I would want to think through. That’s particularly hard to believe of “intelligent people” when checking that it’s nonsense takes very little effort.

There may be an education-intelligence gap that explains why astrology is not evidently false to those people though.