Yes. They are exactly the same as our ultras in that any attept at real libertarianism by definition must be either perfect and successful or old and propagandised enough for them to idealise it (like what Thatcher and Pinochet did).
Milei promised and they expected libertarian success, but he’s clearly not delivering, which (since libertarianism is by definition perfect, everything other is just socialism) two things:

• Milei not did enough libertarianism, so he also did some socialism, ergo he’s a dirty socialist traitor
• Milei did the libertarianism wrong, ergo he’s a dirty socialist traitor