If it's a kid, yeah. It would have took him all of 3 seconds to sign his autograph, dap the kid and keep it moving. 30 seconds if the kid wanted a pic
I get NBA players have this happen to them everyday and if it's a grown ass adult, I wouldn't have mind the reaction but it's a kid. You gotta be a real dikk to just ignore a kid's request when you're an NBA player and most kids will never get the chance to ask for a autograph or meet their favorite player.