I'm assuming your smart contract is not in Bitcoin, since current BTC transaction fees are under $0.70 per standard transaction for 90% chance of confirmation in 30 minutes or less.[0] A smart contract in BTC might involve larger transactions, or multiple transactions, but probably not the equivalent of 240 standard transactions.

The article is about El Salvador's switch to Bitcoin, so the price of smart contracts in Etherium, or some other system, is beside the point.

[0] According to <https://bitcoiner.live/?confidence=0.9> at 6:31 PM CDT.