The article raises some obvious concerns which is worth discussing. Starting from the launch, many were skeptical of the government's reason to stipulate that people use a particular wallet service as it goes against free will that bitcoin promotes, now the discount policy only applies to people that pay using the designated wallet service. Creating a business and having a whole country patronize you would yield good profits.
The other criticism was about who pays for the discount; the obvious answer would be the government through tax payers money, so the citizens are paying for it.
I believe the government is the one who pays the discount and the discount is given to users who use bitcoin wallets designated by the government. I think it is the bitcoin tax that is given back as a discount for the designated wallet users.
this is one of the advantages if bitcoin has been legalized by the government in a country, residents in that country will definitely receive the positive impact of bitcoin.
Whether the taxpayers or the government who will pay for the discount, this move will actually encourage their citizens to use their government's designated wallet and use bitcoin in their supposedly daily expenditures. Once they got a hold of how bitcoin works using other decentralized wallets, they can always separate their activities from their regular expenses (petrol, and others), if they want to have privacy with other crypto transactions. Only a matter of time how they will discover other means how to take care of their privacy when it comes to crypto transactions. At least, this is initial step on how to get oriented with btc transactions.