There are no “different realities” there is only one reality. It’s like claiming WhatsApp adoption will happen at different rates, “Because Nigerian phone calls are different to Australian phone calls”.

In fact money is more fundamental and universal to life than calls are, so if the utility is there, adoption should be more or less the same everywhere if the playing fills is level (which it clearly isn’t).

What Nigeria and El Salvador both show is that Bitcoin can be used as legal tender and serve the needs of entire countries flawlessly. This is a matter of will now, not specification.