edit: seems like some people interpret “full of” as a mathematical majority which, while it may or might not be true instance to instance, isn’t my intent in posting
feel free to swap in “has a lot of” if that’s more familiar language to you :)
Who said the lingering effects of slavery didn't have an impact? You said the voting rights act and universal suffrage being recent meant that a lot of people in the south were disenfranchised before them, hence they couldn't vote for the way things are. Most people in the south did not have their voting rights impacted by policy before those to effect because they weren't alive.
That's why I didn't say systemic racism doesn't exist, or that economic or political disenfranchisement doesn't exist, I said that those aren't compelling evidence to make the valid point you're going for.
I then proceeded to talk about other stuff related to your post, which you would know if you bothered to read instead of assuming that anyone that didn't entirely agree with you must be disingenuous.