Plantinga's "Free Will" defense contradicts Christianity

[John 6IX Breezy]

I think you answered it yourself.

And indeed, that's why we still have prominent Christian voices blaming gays, atheists, non-Christians on earthquakes, floods, fires, and whatnot.

I think most people would understand the verses to be saying two things. The first is don't think calamities fall on people because they're sinners (and that none have fallen on you because you're a saint). The second is to not assume that because this is the case that sin will go unpunished, so repent. In short, bad things happen to good people, and that's not an excuse to be bad.