I was trade ETH first on Poloniex exchange in 2015, in that time the price was about $7 and this year raised to above $4k, that mean ETH is the bluechip asset in crypto space that changed financial alot of investors. So ETH is legit investment with real use case and working product that supported different others of business model. Any asset called scam is that asset keeps going down or not possible to sell it because there are no buyers.