[Matrixbeast]

I think it's a case of comparing apples to oranges here.
People aren't comparing Ghost to Zyuohger, but rather, Ghost to other Kamen Rider series.
I'm glad you got into KR, because there's so much to love. Once you go back and start watching shows like Gaim, OOO, Double, or Den-O, you might see why Ghost is falling flat with some people (Keyword being might).

Also Drive caught on with a lot of people around the early 20's, from what I heard.

Sentai is a bit different, because it kind of adheres to a formula, so it's not shaking things up that people enjoy (Which is why I'm surprised Go-Busters didn't catch on with the Western audience)