The Bitcoin Fund of El Salvador is as closed as the chivo wallet, however, at least fifty cases of fraud have already been reported of the loss of bitcoins from the wallets of chiva users in the amount of more than $96,000, so opacity leads to the possibility of abuse.
After all, people there mostly have, as they say, not so large amounts in bitcoins, and the average loss is $1925, and I think this is a significant amount for the citizens of El Salvador.