I would not say bittrex is in anyway popular anymore compared to before since the inception of binance and some other likely crypto exchanges with lesser fees. Bittrex fee is enormous, and for those who are into large volumes, it matters a lot. However, with respect to reputations, bittrex still stand a good chance hugely. Nevertheless, bittrex volume has dropped since a lot of traders ended up moving to binance for a better volume and fees.