Why do boards act like kills dont give gold?

Almost every time someone is whining about adc or any other champ if you look in their match history x champ was obnoxiously fed and several items/levels up on the people they were one shotting. Like the kid who made a post about a fed draven shredding a team that had 3 armor items total lol. If you don't want to play a game where skill matters go play overwatch or other games where kills don't give you resources.