The Mystery of the Post-War renaming of Christianity as "Judeo-Christianity" solved with the Mystery of Jordan Peterson refusing to say whether he believes in God
The term "Judeo-Christian" is a post-WW2 definition of the Judeo-Christian heritage of the West. Before that, it was just called Christianity. Presumably the terms were merged to be more inclusive to Jews after the Holocaust as well as to acknowledge that Christians culturally appropriated Jewish scripture and interpreted it according to their own preference. The fact remains that Jews do not agree with the Christian interpretation of their scripture and think Christians are idolaters who worship an executed blasphemer.
Jordan Peterson is not discussing the Trinity or his own personal beliefs because his paymasters still hope to use Christianity to rally the masses against their enemies. Those who cannot see the harm of idolatry should be mindful of the malign intentions of the matriarchy.
By not discussing his personal beliefs, he will not be asked if he is Christian to avoid being put in the terrible position of having to defend the Trinity.