And yet Calvin himself rejected such a tweaking view regarding predestination. His argument for predestination was simply that some people are good enough and others aren't, and God knows who is good enough and who isn't.

It's also worth noting that both Thomas Hobbes and JJ Rousseau came from Calvinist circles. So I don't think it is an exaggeration to say that the Hobbes/Rousseau (and those closely influenced by them, such as those of Locke) are effectively Calvinism as applied to society and clothed in secular rhetoric.