I find the surreptitious recording of nonconsenting individuals conducting perfectly legal, private affairs to be the most offensive element in the story.
Busybodies are the tip of the spear of the nanny state.
There are many things in life that are legal, that does not preclude them from being ethically or morally repugnant to a significant majority, but I guess you have no problem with people entrusted with the care and education of your children behaving this way.