No, there's no reason to say that Avalanche is a scam? You can check it from the results of their private sale, they are successful in getting investments from big companies in crypto space like Bitmain. Why can you charge that Avalanche is a scam? give me a reason please
https://medium.com/avalabs/avalanche-raises-12m-in-private-token-sale-led-by-initialized-galaxy-bitmain-ngc-and-dragonfly-96e5ae2cf6e