I think we have to go from the Al Salvadorian's mindset. Would they rather cash (usd) or crypto..

Cash is anonymous, crypto is not (BTC)

Now I'm just playing devils advocate. We shall see how it rolls out. I also have heard from FUD regarding lightning network.. like it is fast! But it does not have the adoption we are looking for. This can always change of course and layer 2 on BTC is a possibility at this stage.