I don't find this notion very productive in these discussions. You could say that in response to any complaint.
Your car runs bad, well just go learn everything there is about cars and fix it. Its easy!
That is a perfectly valid path for some people to walk, but that does not change the core issue. When people buy a product, they generally don't expect to have to fix it. Having issues with a product and then wanting to complain about it, is a pretty normal reaction. Telling them to "just fix it yourself"....not that helpful.