So the entire team would be disrespecting the tournament, those who organized the tournament, the other teams that played in the tournament, past teams that worked hard and were proud other achievements in the tournament etc? Sure, that would still be disrespectful. Even if every single player in the tournament decided to toss their medals, it's still disrespectful.
Look, I get it, silver is meaningless to you, and apparently that kid. That doesn't mean it isn't disrespectful when somebody shows utter disdain towards the thing. Convincing more people to show that same disregard towards it just means more people are showing a lack of respect for that that medal is supposed to symbolize.