Is Ben Shapiro an Orthodox Jew?

Hello Rabbi. I heard Ben Shapiro's lectures in Cecil on improving English, and although he describes himself as Orthodox, I hear a lot of opinions that don't sound like that to me.
He tells those who come to him to remain Christians and that he supports them in remaining in churches, for example.
Is this a legitimate statement? From my understanding, Christianity is idolatry and by staying there, they are essentially supporting heresy.
And in general, how should we treat Christians? Is it permissible to connect with them and speak to their hearts in their language? To laugh with them about the holidays they celebrated, such as Christmas and Easter… From this perspective, it seems that you don't object to the fact that he is a complete idolater.
Thank you and happy holidays