I'm not worried about it myself, but if someone has in their options to not see images and someone posts a twitter or instagram link that contains an image in their post, the image will still appear.

That's why I was asking - if I didn't want to have ANY images show (due to a slow internet connection, for example), there is no possible way to prevent all images from showing because there is no way to disable seeing twitter or instagram posts. I might suggest this feature be added if possible.