Do you realize how slowly US politics move? As I would define it, we've had only 3 political shakeups since 1865, and aside from that our politics have been largely stagnant. That would be the Great Party Switch, the New Deal Coalition, and then the Southern Strategy. Aside from that, the broad strokes of our politics have remained stagnant. Notice how for all the fireworks around Trump and Bernie, the actual effect has come to about zip? If the cycle holds, the most long-lived of forumites will only get to see 2 shakeups. And aside from those changes it'll be every state but the swing states voting the same way every election. US politics is slow AF, 150 years isn't that much and hell yeah racism and the echos of the civil war are still relevant forces in our politics.
But anyway, like I said. Its not technically gerrymandering, but its close enough. In the same way that if a brick falls on my head tomorrow, I wasn't murdered because there was no perpetrator, but "murdered by bad stonework" or "killed by a brick" would be an effective description. I'm still dead either way, just like the EC fucks up the presidential election in the same way that gerrymandering fucks up House elections. Even tho no one could be said to have gerrymandered.