Most rationale people look at something like Scientology and see it as being a cult. However, those same people might look at Mormonism or Catholicism and view them as completely legitimate ways of life. And that’s fine. To each their own.
However, if all “religions” agree that there is only one true God and one true way, then, by definition, doesn’t that mean that there is only one true religion, and the rest are all cults?
Seems to me the thing separating religion from cult is how long that particular school of practice has been in existence. I mean, most people agree that Scientology is a “cult” but that’s only because we have actual color photography of its founder.
I imagine if we had photographs of Peter the apostle throwing back brewskis with his boys and drooling over the wenchs serving their beer, that we might collectively decide that the Catholic Church is also a cult.