That's not really true - there are natural bodybuilders/powerlifters - I'd say people like Layne Norton are likely natural and give good advice backed by multiple studies (as good as it gets although still not perfect). There's also people open about steroid use although that part is a bit more gray because of legal issues and stuff.

Even with steroids you have to know what you're doing exercise/nutrition wise to get impressive results (and still need good genetics).

But a lot of people lie about steroids, I mean look at Hollywood - The Rock claiming natural at his age is just. It's definitely setting up wrong expectations for people.

At any rate, one thing that took me a while to realize when I was starting out lifting - BB advice is specific to highly trained people/bodybuilders.

Like "you can't gain muscle and lose fat". You absolutely can if you're high body fat % and untrained. If you're getting close to 10% BF - not as efficient even with steroids - that's why they cycle bulk/lean. But if you're just getting into shape - cycling will probably mess with your metabolism.

Any professional athlete is probably a terrible role model for healthy lifestyle.