It's not a trivial question of who is offering you something. It's a combination of who is offering you something, what they're offering and how much you need it.
If you were dying of thirst and Hitler had a water bottle, against any other concerns, you're taking it. Also, if you needed change for a pay phone to call a tow truck and Hitler offered you a quarter, you're probably not going to stick to your principles in that case either; because the risks are so much lower and need a bit higher than the aforementioned sandwich (we'll suppose you have gloves and no plans on licking the quarter before inserting it into the phone).
So, really, that Zed doesn't use Tor says more about his own situation than whether he thinks a better or truly-trustworthy way to anonymize live bits is even possible.
If you were dying of thirst and Hitler had a water bottle, against any other concerns, you're taking it. Also, if you needed change for a pay phone to call a tow truck and Hitler offered you a quarter, you're probably not going to stick to your principles in that case either; because the risks are so much lower and need a bit higher than the aforementioned sandwich (we'll suppose you have gloves and no plans on licking the quarter before inserting it into the phone).
So, really, that Zed doesn't use Tor says more about his own situation than whether he thinks a better or truly-trustworthy way to anonymize live bits is even possible.