If your assets are still around, I think you will look into them immediately for verification. I have also used bitrex from 2016 and until now it is still intact, even though I no longer trade there, because I have withdrawn all the assets. In the last few weeks I opened a Bitrex account and there was a notification requiring me to re-declare the document, as I didn't have any assets there, so I released it.
In my opinion, this is possible to strengthen user security and to minimize theft.