In order to determine whether it supports the Copernican principle, it is necessary to answer the question as to whether this life is related to life on earth. With regard to the nature of our own life, evolutionary theory needs to explain why our intelligence is much higher than is needed purely for survival. A high degree of intelligence is found in every culture. In conclusion, although aliens may exist, we probably will never know. However, I too speak as a scientist on these matters, since theology is a science.
Natural science is false when it attempts to decide on the meaning of things.
Likewise, theology is false when it attempts to decide on the physical nature of things. Fear of hostile extraterrestrials. The reduction of intelligence to biochemistry. Thus, the physical sciences could have developed only in the context of a Judaeo-Christian culture. The atheist scientist is living off of this heritage even as he rejects it.