> They will literally have more money in their pockets.
That's a big if. Bitcoin transfer fees might be cheaper, but you need to add the cost of converting dollars to bitcoin, plus the volatility of the coin, plus any fees from intermediaries and Lightning nodes.
> Good things happen when people have more money in their pockets
High amount of remittances are not a cause, but a symptom of underlying problems. Would you be as cavalier about the effects of this on ES economy if it was, say, Western Union saying they'd reduce 10% their transfer fees?
It's always the same thing with Bitcoin, apparently it's such a great technology that it can change anything despite the fact that the only "new" thing it can do is to be decentralized. Somehow the argument always ends up being that decreased transfer fees will revolutionize everything (despite the fact that transfer fees might not be lower, and that we've had continuously decreasing transfer fees for years and yet that didn't seem to bring any revolution).