i will say it is smart & sober to break your Bitcoin in 14 wallets, it is another point. El Salvador recently divided its 6274 BTC holdings into addresses with a 500 BTC cap each. Perhaps they are worried that the theoretically dangerous possibility of quantum computing will ever crack their public keys, hehe. you know everyone could audit it using the public dashboard, while keeping key reuse risks in check.
But also that shows how serious they are dealing with future threats of those evolving technology might come in future.
Also with those things they made we could really see that EL Salvador is planning to store their Bitcoin for more long years and it indicate that they are not going to sell their Bitcoin anytime soon.
This cleared out the doubts on some people and guess that's good news after all. Well next is we need to pay attention on possible threats of those technology then let see what we can also do to protect our selves on possible future attacks.