That's hardly the point of the article --- the actual paper does not describe the use of two separate vectors for each word. The initialization was an interesting tidbit.
Except it does? After Equation 2: "v_w and v'_w are the input and output vector representations of w."
bollu, multiple people have shown that your claim that the paper doesn't match the code is flat out wrong. I think at this point you should issue a retraction of your wildly inappropriate suggestion of academic dishonesty.
Of course it does. For word w they are v_w and v'_w on Eq.4 for the case of SGNS [1].