The only issue with this adaptation of a great comic is that it infers the Confederacy was a well built structure that depended on that one small thing. The Confederacy didn't exist that long, it even didn't have a single flag version for longer than a year or so. Change it to the southern states' economy and it makes more sense.
It's... blocks haphazardly balanced. Which is completely the point. Do you think that looks like a "well-built structure"?
It's certainly a chaotic mess, but perhaps knowing the original subject of the comic tarnishes my take on it being used for other things in the same way. Analogies are often tricky.
I think it’s pretty ironic that this meme is trying to make a statement about the confederacy not acknowledging the work/contribution of slavery and having trouble doing so because it’s an uncredited “”adaption”” of someone else’s meme.