"BitSkins is ramping down its operations. No items can be listed or funds be added to accounts as of 09/27/2019" what u think why they do that!?
Let's face it, Valve is getting rid of the competition, but there always will be an alternative. The second biggest CS:GO trading platform right now is DMarket and until Valve haven't started blocking it, we can buy and sell our skins there. So, I believe that users shouldn't panic about this. Until selling CS:GO skins is a profitable business, there always will be such platforms.