They just need to make sure they do not make the same mistake that El Salvador did, which was buying at the top, they need to wait it out and buy when the bear comes next year.
El Salvador made the mistake of thinking that bitcoin could save their economy and they got too dependent on it, but I don't think they made any mistakes with their bitcoin investment strategy.
If I remember correctly they are holding over 6k2BTC worth over $700 million and the capital they have spent is $300 million. That means the profit they made was around $400 million and that's not a bad profit.
In my opinion, for countries, organizations and companies, those with large capital and can invest long term. They can and should invest whenever they are ready, they don't have to wait for a bear season or a bitcoin price crash to buy, and El Salvador and MSTR are doing quite well with that strategy. The bear season waiting strategy is more suitable for small investors.