Presidents here get a special pension when they retire, for having been presidents. Milei gave up his.
This contrasts with the arch-enemy who has not only a privilege pension for having been president but also her husband's, who was also president and died under mysterious circumstances. I believe the government recently took away her privilege pension, though.
On a semi-related note, I think it was Trump who gave up his presidential salary in 2016. Is that correct? I think I heard about that back then.