a) You definitely don't need my permission to write a rejoinder. In fact, I would love that!
b) I concur about creating systems to prevent that (and I believe I did address that in the writeup)
Humanity is a sinful being that knows it is a sinful being hence why we fence ourselves in with rules and laws and commandments to be less sinful and less corrupt. True enough. We need systems to minimize it.
The most fundamental of those systems however is punishment for the already-guilty. If they are pardoned while those who sin after them are punished, that is unfair. Eliminating the corrupt leaders is not meant to eliminate corruption (after all, even Britain and America and China are corrupt); it is meant to make the survivors smarter about it, to make sure they know they can do it but not with impunity. That they must be careful, that they must be accountable and, most of all, that they must actually do the job they were appointed to do and have the stealing be a side-hustle (rather than having the stealing be the entire point of the exercise as we currently do.)
Without some measure of consequences, things will continue as they are. With consequences in place, then the rest of the plan comes into play where education is improved, standard of living is improved so that people are less desperate and there is room in their lives for goals other than money-money-money.
Did you know Nigeria has a space program? I do. It's a small building on a big piece of land on a highway in Abuja. Do you suppose they have a budget? Do you suppose that budget is being spent on heavy lifter rockets and infra-red satellites?
Thanks so much for the deep comment 👍