SA and Africa in general is cheap clicks. Ads don't convert as well as they do in first world countries. Therefore the competition for ad space is higher in those countries, which means it costs more money to advertise and win ad space auctions against other advertisers, which is why those content creators earn more. Kind of like advertising during an SABC soapie vs the middle of a Springbok test.
Over the years I've released a few side projects and done some Google and Meta/FB campaigns. SA cost per install was around R10 last I checked - people download, sign up and then do nothing or uninstall. Basically junk installs. It's the same with India and many of the far east countries.
Whereas in those first world countries it's at least double the price on the lower end (Aus, NZ) and a lot more on the higher end (US, UK, EU). Difference is in these countries, many of the signups actually use the app and about 5-10% convert into paying subs. So advertisers are willing to pay a premium. High in-app engagement is essential in creating organic growth.
What this guy wants is more money, because reasons. It's a noble thought but economically daft...