For example why will someone be using unverified account? If you are using unverified account then you will definitely meet the consequences.
Because you used to be able to deposit, trade and withdraw without verification. Why verify if you don't need to? And then Bittrex changed the rules without warning so if your account isn't verified your money is trapped there now. It would have been fine had they just warned their customers so we would have had a chance to pull our money out, but Bittrex didn't warn us.
It is not about stealing your money
But it is. See above.