Just look at the founders of Humanism, one being Martin Luther. The whole Reformation was built on Humanism. Martin Luther's whole world change from being a Priest to being the first Reformer to actually die of natural causes was that he was going to the bathroom and realized that Jesus also poops. Popular thought is he was scared by lightening, but that's weak academic research. That really is Luther's turning point, Jesus pooped. History of the Western and now the whole world has changed because of that one Humanist thought.
The whole birth of Humanism was "emphasizes the humanity of Jesus." Now we changed the term completely 180 just so people won't use the term Atheism to define themselves but they will fight to hold on to the equality of humanism and atheism.
I actually have had days of discussions with various modern Humanism thinkers and leaders. They don't deny that fact, but they also choice to defend that Humanism equals Atheism. It is like a Intellectual Hijacking of Centuries of Thought and Philosophy. It's because the preference of semantics but it is the actual opposite of the word, thought and historical meaning of that word.