I still don't think that sort of generalization is fair, though. I think a normal, sane office could be open, but without the ongoings that seem to be present in the environments you and the parent witnessed. Well, I can definitely vouch for that being the case in the office I work in.
They said they had trouble finding senior people. If I had been more aggressive I would have told them "have you considered having an adults table?"
At one SF shared workspace area, this guy always brought his dog in. Damn thing would go sniffing around and most people thought it was cute. I found it very annoying, especially when I had food. While I could tell him to piss off and keep his dog away, then I'd come off as the dick.
[1] http://www.mnn.com/family/pets/photos/10-companies-that-let-... [2] http://www.quora.com/What-San-Francisco-startups-allow-emplo...
I work from home 75% now. When I'm in the office, I get next to nothing done.