If you read the thread, between all the torches and pitchforks there are a fair number of comments supporting that viewpoint, for instance:
"I love how everyone is saying no, but they actually have [harassed users in other subreddits]. Most recently someone took pics from a /r/keto post and not only posted to FPH, but also got in a huge argument with a lot of members there. That's not the only time I've seen FPH in the wild." http://www.reddit.com/r/announcements/comments/39bpam/removi...
"I got this PM from a /r/fatpeoplehate mod for having a BMI of 25.7" (vicious and obscene content elided) http://www.reddit.com/r/announcements/comments/39bpam/removi...
"Some of you may know that we are currently under a comment brigade from many users from /r/fatpeoplehate due to the current top post of the subreddit, linked here." http://np.reddit.com/r/GrandTheftAutoV/comments/35rp8l/a_mes...
Untrue. They were posting stolen, posted elsewhere, and original pictures of obese people just to make fun of them. That was the entire sub's purpose, to victimise and bully people. You could go on that sub any day of the week for months and that was their entire front page, pictures of fat people and hateful comments.
How long do you honestly think a sub would last if it took random pictures of black people and then everyone posted hateful comments? Even a week?
There's absolutely nothing "contained" about what they were doing. Plus they would invade other subs and threads, brigading those with differing opinions to themselves.
Uh, there is one and is still up: https://www.reddit.com/r/coontown
Just because the people who originally uploaded those pictures don't understand how the internet works doesn't make the images stolen.