My first thought was that this was very un-Libertarian of Milei, and then I got my answer:
José Luis Espert, a legislator in Bullrich’s Together for Change alliance, which is in coalition with Milei’s Liberty Advances party, replied with a three-word phrase: “Prison or bullet.”
Milei did not even say these lines.
It seems to be mostly about cracking down on disruptive protests that block traffic, etc.
Some of this just isn't that bad:
It also limits the participation of teenagers in social protests, ruling that parents of youngsters who should have been at school instead of protesting will be sanctioned.
Fair & good.
Some do it to potentially document accidents - I know some racial minorities in my country that say they are accused of child abuse and investigated at the drop of the hat if they bring their kid to the doctor and they have any kind of bruise. I heard of a Muslim woman who lost custody of her kid for 48 hours until she was able to produce CCTV footage of her child breaking his arm in a playground accident, and not due to some act of child abuse.
So,, having a cam that catches your kid experiencing an innocuous fall wherever it may be in the house is a good security measure, particularly if the justice system comes at you preloaded with bias.