Do you not lock your doors because you feel you shouldn't have to worry about people stealing your stuff because it's morally wrong to steal or do you do it to mitigate risk? Suggesting someone should mitigate potential risk is all we are talking about.
The following two sentences read the same to me:
"To remove my incentive to harm you, you should pay me".
"To remove my incentive to share information with others who may harm you, you should pay me".
And, the threat is pretty clear IMO.