> In reality they aren't KKK members though. Instead they are disproportionately black and other minorities.
They are overwhelmingly felons. The disenfranchisement rate is highest among blacks at 7.8%, so 92.2% of blacks, so the overwhelming majority, is not affected by this at all. What makes you think the majority of blacks would welcome the enfranchisement of criminals that happen to share their skin color? After all, the victims of these criminals are overwhelmingly black themselves.
Also, black voter turnout has been consistently 5-10% lower than white voter turnout except for the election of Barack Obama, where it was the opposite. That means the impact of felony disenfranchisement at most is about as high as non-participation has been in the past.
> Regardless of whether or not you think incarceration of minorities is systemized disenfranchisement...
Indeed I don't think so.
>... I think any loophole that hypothetically allows the system to chose who may vote is a bigger threat to democracy than an incentive to appeal to criminals.
I don't consider it a loophole, becoming a felon is a fairly high bar to getting disenfranchised and the constitution sets some boundaries as to what can be considered a felony. If anything, I would argue that locking someone up for years for selling an ounce of weed is unconstitutional.