That is a good thing, and I believe El Salvador knows what they are doing; they understand how Bitcoin works and how to protect their investment from any attack. El Salvador has understood Bitcoin from the beginning and they value it to the point of investing millions in it. There is also news that they currently have a bitcoin bank in the country, which shows how much they value Bitcoin and believe in it.
Distributing their Bitcoin is the best way for them to protect their assets from scammers because there are many scammers who may be planning to attack them. This is another way of informing some people that keeping your bitcoin in one wallet is very risky, do not keep your bitcoins in one wallet because if an attack occurs, it will affect all of your bitcoins and you will not lose them all.