You can buy without problems at HitBTC. Deposits and withdrawals work well.
I think the only two reasons to delist it from Bittrex are: Poor implementation of use cases or poor reception by community and limited trading volume on the exchange or potentially suspicious trading activity.
Anyway, Bittrex is not the only exchange that exists in the market.
The problem lies in liquidity. The team does not contribute BTCs and all centralized exchanges work with market makers (now they do not make money)
that there is no liquidity now does not mean that there will not be in the future the same way for use cases.