In any event, the House sits beside the Senate and the Executive. As another commenter pointed out, this case at best explains ~2% of the dynamics of one out of three legislative bodies offices. And sure, other states might contribute a bit more. Fine, maybe it clears my 1% threshold; but just barely.
I'm not here to defend Republicans (I think they're pretty bad) or the practices you described (I also think those are bad). But that doesn't change the fact that gerrymandering and power grabs and Fox News are nearly completely inconsequential in explaining the world in front of us. Quit with the liberal wishcasting. People don't vote Republican because they've been misled by some sinister conspiracy. They just don't want what you're selling.