I do think Facebook is a real threat to the well-being, integrity and possibly even the future of (some of) our kids. If any of the folks in our office just so much as try to access Facebook, we'll see if maybe they have too much free time at their hands, or if we have another 'addict' and we'll handle it accordingly.
If they publicly put their office mail address on Facebook or otherwise mess up, their mail account will be suspended. It's only a chosen few that can't live with these rules, and they tend to be the more useless ones. If their parents didn't teach them, if their teachers failed, well, I really don't see why or how an employer should handle these 'special' needs.
We have officially disabled folks with actual disabling issues working like mules all day long, going for raises and bonuses to finance their holidays, dreams and/or kids. And we have 'healthy' young people failing miserably because they behave like the masters of the universe without actually knowing anything much beyond amusing and consuming themselves silly. It's a real problem, as anyone in education or as an employer could confirm.
In that dad's place, I'd have done the same, but I'd probably have used a sledgehammer, as it tends to bring out all the disappointment and anger blow by blow. These days, parents who really try to make a good job parenting are under a silly amount of pressure. The 'empowerment' of children works against both the parents who care and the children who'd need their bottoms spanked. The education systems of old are changed beyond recognition. Take France, where meanwhile an unprecedented whopping 80% of all youth achieve the 'maturité, which would allow them all to go to university, but the majority of them is absolutely useless and decidedly non-academic.
And yes, I do condone destroying her laptop and making her reconsider her stance. The children we raise and teach should be better than we were in order to have it better. If they turn into lazy meat-bags there just will not be a better tomorrow, quite the opposite. And we can't have that, now, can we.
Why put it on Facebook/YouTube? If I got this right, and believe the story, then I think it's safe to say that the fragmentation of realities was already a fact quite some time before dad 'snapped' - in a rather controlled fashion, I might add. The compartmentalization of our - family and social - lives is indeed easily furthered by the ever-tempting time sinkhole and social black hole called facebook... I sympathize with almost any and all opposition.