The money you receive for shorting the stock is all yours, though there might be some delay in freeing it from the broker's grip -- it holds the money as collateral until it writes off the loan.
Exactly. And the amount of collateral you have to cough up to short a stock trading at 0.0001 is $2.50 a share. Do the numbers.
In addition, it was obvious nobody was shorting ARIOQ. Volume has been very low.