The Lord Jesus cannot be divided or compartmentalized.
The Jesus who asks us to care for the poor, love our neighbor and create a more humane society is present even if those things are never mentioned.
The Jesus who came to die for our sins is present, even if confession and absolution are not part of the service (as they are often not part of the worship on Christmas eve, save for the Sacrament), or if the sermon is not one calling for repentance.
We meet the full, complete Jesus every time.
And practically, the Jesus we meet comes to us in a variety of services, over a period of time, and in different ways for different people at different times.
Often, I am sure, someone attending a particular service might be miffed because they "like" their favored view of Jesus and don't care to hear about the Jesus who sends us out to do difficult things in his name, like care for the poor or - yes - reform and create a better society, not to bring in the Kingdom of God (that's His work), but to show love for our neighbor. And some would rather hear of those things than of repentance and amendment of their own life. But the whole message is always present.
Therefore, to say "The Jesus who came to die for our sins was absent" from any Christian service where the Lord and his Divine/Earthly life and story are celebrated is simply wrong and an arrogant judgment based on personal preference rather than the whole witness of Scripture and the full teaching of The Church.