Are you implying that some people are "cancer" and deserve to be eradicated? Why not just come out and say what you really mean without the plausible deniability and euphemisms?
ofc at least some people are enough like cancer they should be at least be changed... there's a lot of people. But no, I don't think this alone would be a sole distinguishing feature in that regard. It would be more "cancer-like," but there should definitely be more nuance before it's decided that a person "is cancer" and eradication should only be a last resort after everything else had been tried.