Do you think he'd have that "type of vascularity" if he never worked out or took a drug in his entire life?
Fair question.
I have a friend who has pretty extreme vascularity who does not train, so I think people with genetically thin skin can have a pretty vascular look without training.
But "pretty vascular" and wazhazbin's look is not the same thing.
hazbin's size and vascularity is not possible without training and drugs.
As far as the vascularity alone, I have never seen anyone that vascular who doesn't train and use drugs, so I don't know if it's attainable without both.
I would guess no.
Are you familiar with horny Ironage pornographer Peter North?
Somewhere in this long podcast, he claims he always had extremely thin skin and vascularity, even as a child - well before he ever trained.
North's ex-girlfriend Jewel Denyle said in a comment in a video that he made about North that he never used steroids. At 5'10.5" and 185-lb, I guess that is possible.
And Jewel did NOT hold back at all about North in that video, lol. I think he even had her remove it. She said he takes it in the ass, and was addicted to Valium.
But in the comments, she said he never used steroids. And she was living with him.
Maybe that meant that Peter never injected steroids...or she would have noticed.
Perhaps unlike his earlier sexual proclivities, in terms of steroids, North only liked receiving oral.

At 62 in this video, North at 183-lb is still pretty vascular: