Milei's wet dream is to allow for a free currency market, specially for private issuers. Yet, he has to go little by little, not out of graduality, but because there are unavoidable financial obligations he has to assess:

1. First, he has to pay for all debts: the Chinese swap, the Paris Club debt, the FMI debt, etc, etc. All those obligations were acquired by the government through the central bank, so they have to be paid by the government via the central bank. Until that's done, the peso has to remain in circulation, in good part because many of the financial obligations of the previous socialist regimes were acquired in pesos via bond emissions (tied to the peso), to partially cover for printing money.
2. Then once all of the above is advanced enough, hopefully by the second half of Milei's second presidency, the next step needed to eliminate the central bank is to transition to a dollar-based monetary system, which is the one largely already in place, so the most natural.
3. Only after transitioning to a dollar-based economy has allowed to delete the central bank, a free monetary system can be proposed. This would take two more terms at least, since after transitioning to the dollar, a time of normalization is needed.

I insist that from day one it has always been the explicit intention of Milei to allow for private money issuance via a free monetary system, known as "Simons Banking": https://www.cronista.com/economia-politica/que-es-la-banca-simons-el-sistema-con-el-que-javier-milei-pretende-reemplazar-al-banco-central/