I imagine it's general ignorance. If you're familiar with the Operation Darknet BS they're running now, you'll know how much of a disinformation campaign they're running. There are certain groups and governments who want Tor gone, and inevitably 4chan and Anonymous still go hand in hand to some. Whomever is after these pedophiles is really going after Tor and the concept of Anonymous at the same time, due to what they have done politically.

It's going to get a lot more interesting in the next year, you'll see.