I bought eBTC when it came out, I kept the coins in EtherDelta. Guess what, they made a token swap. And guess what? It was automatic, and I got none because my tokens were in the Exchange..
if you are a long term investor, you cannot keep your coins in an exchange.
If you are a trader you should be informed about the coins you have.
you cannot say that eBTC is a scam because of your negligence