The proper word for this type of person is Christofascist.
People like Moore should not be enabled. Don't play along with their fake claims that they're Christian.
Just because he's a terrible representative of the faith doesn't mean he isn't Christian, unless you're suggesting that he's faking his beliefs. I couldn't tell you for certain, but he strikes me as being more of a zealot rather than a conman.
If someone runs around saying they're a vegan, but regularly eats bacon, beef, and chicken regularly (out of willful stupidity/ignorance)
they're not actually a vegan. They claim to be vegan, but
they're wrong.
Likewise, people like Roy Moore (or Donald Trump) aren't actually Christians any more than they are reptiles. They're not just bad at being being Christians. They are simply wrong - claiming a label that does not accurately describe them.
I guess I should include for clarity that there's a possibility that Roy Moore is a Christian, and intends on going to hell.