I can imagine Milei calling Biden up and him saying how proud Argentina would be to support Israel. Argentina is ready, willing, and able to do something bold. Send troops - erm - observers into Gaza - maybe? All Argentina asks in return is a little help in protecting its democracy. And don’t we know how fragile democracies can be?
I think they really didn’t want to delete the post and to save face they did their version of a walkback. It doesn’t have to make sense to us or the public in general. The walkback only has to make sense to them.