Listen to them when they hit the ground. They sound hollow and don't sound right when they move on the bar.
He is good friends with Rich who also uses fake ones in videos..hmm. 
Oh and this bench is real and there is a Santa Claus.
bro come on, keep it real here, you can not compare that to a video we already know is fake (andy). The verdict is definitely not in yet. I do not know for certain but a lot of guys here who been around say they sound real, they sound real to me and they sound real to Hazbin. And some feel they are fake as well.
I have a home gym and reviewed the video carefully, I put 275 on the bar and moved it around and i am sorry i noticed absolutely not difference in sound.
Who knows, you might be right, I believe they are real though and know how strong this guy is. I can curl 225 for reps with the same form and this guy is way stronger then me.