I hope that's a troll post
FFS you are dumber than he is if its not...
What makes you think normal people - many of whom literally haven't lifted a weight in their entire existence - would see his arms at rest and immediately know something is off? Even if that photo on this page, his arms look bad to us - but do they look anything as obviously bad as the contest photos?
There are way worse examples of synthol out there...or implants, assuming they are implants. He has a personal training business/studio, right? Do you think he's making that up? How do you suppose he gets clients? Obviously there are some people who believe his arms are legit. What I'm saying is that there are normal people who do not work out who are impressed with his arms. Something made him get to that point, right? So what was it?
I think you may be projecting your bodybuilding expertise a little here...