Very cool! There are some good articles in that book, I'm happy to see it accessible to a wider audience!
This is off-topic and I don't have time for further discussion at the moment:
On page 40 one of the authors is arguing that Cicero often disguises the Epicureans with phrases instead of naming them directly. The author states this is some kind of a rhetoric method.
"But at other times, both in these works and others where Epicurean doctrines, though not the focus, still come under some consideration, the interlocutor regularly invokes the Epicureans obliquely, using a periphrasis that identifies them as “those who refer all things to pleasure” or the like. Cicero uses a formulation of this sort at least twenty times in his theoretical works."
It strikes me, because this is something DeWitt suggests St. Paul is doing the same way in his epistles!