Also, I think you understand 'spirit' better than you think you do. Let's say you are staying in a hotel, and you decide to walk around the place a little. You come to a large room full of people who are there for a wedding celebration. But even before you know why they're there, you can feel the spirit of joy, mirth, and good humor, etc., in the room. And you can feel yourself getting 'infected" by it. Because that's how we humans are. We tend to take on the spiritual state of those around us. We are a social species, after all.
Well I think you are using a different definition of spirit, this one,
the prevailing or typical quality, mood, or attitude of a person, group, or period of time.
So if that is all CT is talking about fine, but I think he is not just talking about the atmosphere.
Recognizing a spiritual state or condition within oneself, or within others, is not some great supernatural mystery or feat. We do it all the time. So it's not that you don't understand human spirit and spirituality. It's that you don't understand it in relation to the idea of God.
Now you have switched from spirit to spiritual and back again.
I think you need to settle on what you are suggesting here,
Spirit the non-physical part of a person which is the seat of emotions and character; the soul.
Spiritual the quality of being concerned with the human spirit or soul as opposed to material or physical things.
When you are using two definition of spirt it is confusing your hotel analogy is not related to spirit in the sense of spiritual