The main Tor software is still largely controlled by Roger and Nick, not sure if Paul has a big role in it anymore or not. Of course there are also dozens of other prominent developers who work on it to various extents, Jacob Appelbaum being one of the most famous (he definitely has no ties to the US government, other than being perpetually harassed by them). His claim that LE can use some backdoor in Tor to identify people involved with CP is entirely baseless.