OP isn't asserting that what we now consider to be humanism was founded by Luther/Calvin. They're making a (slightly irrelevant) claim that the meaning of the t

OP isn't asserting that what we now consider to be humanism was founded by Luther/Calvin. They're making a (slightly irrelevant) claim that the meaning of the term "humanism" has changed from some sort of Christian humanism to the secular humanism we have today.