I think the benefit to the global south will be more indirect, and that's where the left-coded get confused and start running into walls and get mad about scaling etc..

"The Global South" is a euphemism for poorer countries, countries that are poor for lots of reasons, some which Bitcoin may help but some it may not. Poor people cannot save their way into prosperity, and with Bitcoin's primary use being a savings vehicle that's probably a bad strategy.

Bitcoin can benefit those countries by effecting trade and currency policies at a geopolitical level, and it can provide efficient infrastructure where it's otherwise lacking to make the world overall more productive and efficient... but that means appealing directly to the retail saver is extremely low leverage by comparison.