I guess there are to reasons.
One of them is Trump
They don't let me withdraw my funds and are forcing me to send a copy of my id and a selfy which i deny before they don't answer my questions
1.Where their main office is located
2.Where my copy of ID will be stored
3.How it will be stored and protected
4.If they take full liability for loosing my copy to a third party
Since they deny to answer these questions i deny to send a copy of my ID.I choosed a basic membership with full intention to not be forced to send a copy of my ID to a company like Bittrex which denys to answer these simple questions.
Asking if i get Bitcoin Gold for the BTC which is stucked at Bittrex lead to an instant ban.
I personally have given it all, because I have a pretty good fund in bittrex and my account was locked by bittrex for the wrong mistake I made and I realized it. I do not think in detail like you, because I just want the funds I save on bittrex I can control again, until now I still use bittrex and I have no problem with the identity that I have given to bittrex. I know bittrex has stood for a long time so I trust them.