The thing is soooo many sites still display inaccurate information. There are many perceptions on the internet which are incorrect - the size of cages being one. GPs are considered disposable pets, they aren't considered to have much "worth" in comparison with a dog or a cat. Sure she should have researched first, but many don't because of this very reason.
I sure didn't. I had the internet at my fingertips too. I thought it was "normal" and the right thing to do to get one pig from a petstore and stick them outside in a hutch that was too small for one let alone the other 2 I later added to it. Does that make me a bad person? I dont think so. I was ignorant, and whilst I should have done my research - like most I didnt. When you stumble upon sites like ACS, your eyes are truly opened up and it wasn't long after I joined that the pigs came inside in a big C&C.
A concise email pointing the person in the right direction for information (sites like guinealynx, guineapigcages and acs) would have been more beneficial than jumping on them and calling names. And I agree with Shiralee, whilst it doesn't look great from the photo - we know nothing else about this lady. Nothing at all. You can't judge someone based on one photo, even if the size is absolutely appalling and a guinea pig is in with a rabbit.