I am saying it is wrong because it is too damn small. If it fit him properly, it'd be fine. I think shorter sleeves are nifty on people with tattoos to show off, but that doesn't mean that grown men should shop in the little boys section. You could be wearing the Greatest Shirt In The World, and it'd still look terrible if it didn't fit.
Dear People Of The World,
Dislike looking over weight? Buy clothes that fit!
I used to have a friend to hated how fat she was. All the time she'd complain and complain about it. But she wasn't really that fat! A bit healthy sure, but not fat. Nothing she really needed to get rid of. But she wore a size 10 when she should have been wearing a size 14. The size 10s would squeeze her fat out and over her pants, making her look a lot bigger than she was. If she would have worn a proper size, she would have looked lighter.
When your shirt is so tight, you can use your buttons as weapons, you need to get a bigger size, or be sure to provide everyone around you with goggles for when those buttons pop off.