It would be interesting if this is indeed the case. With the government not giving salvadorians custodial wallets. That also explains the idea lower down this thread [1]. That stated this might be done so the government can print their own money.

With the SQL database, that would be quite easy. With actual bitcoin wallets (or the lightning network) essentially not doable.

[1] https://news.ycombinator.com/item?id=27628739

p.s. for people wondering what LN is, it is essentially:

Pairs of people agree to split some locked up bitcoin a certain way.

If they want to exchange bitcoin, they agree on a different split.

If someone tries to cheat, Hashed Time-locked contracts (the crypt magic that makes this work) means you get to take all of the locked up bitcoin".