As someone who lives in a Southern family that DOES think this way, let me explain how they view it. In their views, they don't HATE gay people, they just view it as a sin as someone would view adultery and such. It's not "homophobia", because the few gay relatives we do have are pretty much fully accepted by them.

He's probably just pissed Oliver escaped from him.

I highly doubt Oliver's Dad will return ANY time soon. After all, he literally shot himself in the head then was buried and left to decompose.