Whilst the above is true on its own, not that many months ago, the non-realized surplus due to BTC prise rise back then was the argument for financing the construction of the Pet Hospital:
When he announced the Pet Hospital back in October, he twitted an explanation on where the funds were coming from. The tweet (see https://twitter.com/nayibbukele/status/1447017312893161478 and scroll down) is in Spanish, so I‘ll summarize the core parts in English (freely translated, with my minor added comments):
Nevertheless, its balance sheet bears both USD and BTC [the latter derived from the purchases].
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The Trust is now worth more than the allocated figure, due to the rise in price of BTC, rendering FIDEBITCOIN with a "surplus" of 4M $ [theoretical on the books, and forever changing with BTC price fluctuation].
Therefore, the government made company, Chivo, can dispose of 4M $ [October 2021 numbers], without affecting the Trust’s allocation.
This is carried out by keeping the same amount of BTC, and reducing the amount of USD. We can therefore invest 4M $ in some project.
So we decided to invest part of that money in a Pet Hospital.
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There we go, the perfect potential example of the former part of to fable the milkmaid and her pail. While BTC goes up, they extract USD from the trust, keeping the book value of the Trust near the legal allocated value. The problem is, that BTC could go down, and activate the second part of the fable …
It’s a dangerous game playing each direction with a different set of rules (though we may know which one is right and which one isn't)…