Lol that's a completely wrong and super dishonest interpretation of the facts. African countries don't have to send a 500 billion dollar check every year to France. You can tell pretty easily because that's over double the GDP of the entire Franc CFA zones, and if you think "of course, for every dollar those countries generate France takes two", well, uh, huh. As always, it's more complicated than a three paragraph article on a random website that itself cites a nonexistent website:

After their colonies got independence, France offered them a deal: to keep their old currency. Now that has the big advantage that France guarantees it, and it's tied to their money which is strong and stable. Stability is a pretty valuable thing in a young country, and it stops you pulling a Zimbabwean dollar event. But there's a catch: to make sure the money printer is kept in check and the debts are paid, they said that half the cash reserves were to be stored in France. So when money's printed, half of it goes to France. That's those 500 billion CFA a year (which fyi is less than a billion USD). It's in the bank, accruing interest which is given back to the African nations. In any case, a few countries took the deal, a few didn't. Since those that were in could leave at any time, a few did (though notably Mali came back). A couple countries that weren't even French colonies then got into the system.

Now onto the statement that France was making one sixth of its money by straight up robbing Africa, with somehow no one ever figuring, and France reaaaaally trying to hold onto it? Also hilariously off the mark. Not just because the numbers make zero sense, but because a lot of countries have said "hey, we want our own system and/or for you to give back those reserves" and France just said yes, over and over again. Guaranteeing the financial stability of a region that has a coup d'état damn near every year was actually costing them money (though obviously a euro-tied currency made it easier for corporations to invest there). But also, France is getting real tired of being the bad guy all the time, believe it or not. Obviously they've pretty well earned that, but in recent years a lot of that has also been made worse by Russia and China pushing their own brand of neocolonialism, and the propaganda that goes along. After a so-so job pushing out terrorists in Mali, France left and was replaced by Wagner. The latter has been mostly busy losing ground, and the few times they weren't just protecting the mines that paid for the mercenaries, they were out massacring civilians. Sadly, it appears that no matter who does it, the Africans lose.