It is not Bittrex's fault for trying to make the majority of the crypto community happy. Bittrex's responsibility is an exchange, and IS NOT a code checker.
It is entirely their fault. If you know something is fraudulent you don't list it (or you delist it)
And in the mean time other good coin don't get listed...
The initial code did not have the hidden premine. Only after the wallet update was it noticed.
People need to quit blaming someone else for their poor life choices.