He’s a decent guy, doesn’t deserve the hate being flung his way.
As others have pointed out elsewhere, nobody is going after Nike or Adidas for gang violence, or car manufacturers for people doing bad things while using their products.
Merchant items sold on a site cannot control what kind of person pays 29.95 for a T-Shirt. They cannot. Think what would have happened if this clown had an NRA shirt. Or Sig-Sauer or Glock or heaven forbid, Bushmaster or Colt.
These are tools, and this perp used his in an EVIL way- him being a “hunter” and all. The answer in this, imo, may be found in the father-son relationship and if there was any. After all like Sandy Hook, the punk kid stole the rifle (from the mother whom he killed)— so what about the dad. We may never know.