There are a ton of teams that could say that. Maybe anyone that has been in Maryville's Conference the last Decade. Are you county Maryville as one team or at least 5 times since they have 5 state championships in the past decade? Lenoir City can say that, Knox West could say that, Catholic could say that, etc. The problem is have you been even remotely competitive in those games is the big question? Do you have a tough conference Yes, Does bragging about being in a tough conference just to get whipped and say you don't run from competition (It's hard to run when you have to play them). Out of conference is why people are giving you a hard time
PS I don't think you played 3 state championship teams all in the same year.