Sure, but the fact that no one knows what socialism is doesn't mean that the definition of socialism changes. Argentina is an example of socialdemocracy with too much interventionist, nothing to do with socialism.
But again, even if the new guy has good ideas nobody should support him insulting to make a campaign, this just makes discussion counterproductive, and its the base of a democratic society
In particular yes. And even if its usually a bad idea an equilibrium must be found between social services and Liberal policies. And Argentina is clearly in much need of some Liberal policies. This president might take it too far, making some irreparable mistakes like doralisation, but seeing the state of the Argentinian economy its provably an overall positive. But again, its. Abit sad that he feels like insulting is the way to do it.
Also, the IMF usually gives good advice to counties, most of its bad reputation comes from them trying to impose unpopular measures to counties on the border of collapse and it usually fails. But that's like blaming Hospitals for not beeing able to save all patients. They usually ask for a but too much (as you said they are liberals after all) but its a good idea to listen to them