Personally, I dont see how is it wrong to compete in something that a person is passionate about. Even if he loses, he still gains experience and satisfaction from doing something he likes. There will be winners and losers in every competition. Why the hate?

My rm0.02.

I think it's difficult to just use dumbell and bodyweight exercise too add muscle and cut down to look like that.

Different people different result.

Why dont you try and tell us about the result.