Those are real, and for him, it is no big deal, he is pretty strong. The taking off the shirt and crazy moves is a great ploy that garner's him a lot of fans. Why not. It works. It worked well at the 2017 Olympia Expo, where he had his booth, and lots of fans taking pictures with him.
Said hello to him, took his pic, and watched him have fun. Cool thing.
I have seen Steve Cook do 120 pound DB's for 12 reps too at a Boise Gym a few years back, so yes, it is possible. Funny how people think things are fake.