I'd say you can read Aaron's own defense of child porn on his website and draw your own conclusions. If you're trying to suggest that I'm somehow defending Ohanian and Huffman, far from it. I can think Swartz shouldn't be considered a modern folk hero and still not like the other two.
Huffman was a mod for the jailbait subreddit.
Here's an interview with Ohanian after CNN reported on the jailbait subreddit which caused Reddit to close it down. Alexis blames CNN for "making up jibber jabber" and the children who allowed images of their abuse to be posted online.
This type of view was apparently support by all the original Reddit folks, just because Swartz has a better reputation now doesn't mean he didn't also share those views.
Also Swartz had a section of his homepage defending child pornography as "not necessarily abuse" and that possession & distribution of it should be a first amendment right. He also advocated for a violent overthrow of the US government. Here's a cache of one instance of him defending it. Aaron did some really great tech stuff, but he's not a person that should be regarded as some hero as he had a lot of views that were misguided at best.