God’s creation acts of Genesis chapter 1 are an essential part of the foundation for Christian doctrine, as they are key to establishing the basis of God’s sovereignty over his creation.
When those who profess Christ deny the reality of Genesis 1 in favor of a doctrinal position that God used evolution over millions of years to do his creative work but he excluded this from his inspiration of Moses in writing Genesis, they are setting the stage for their rejection of other Biblical doctrine that is based on God’s sovereignty, e.g., the doctrines of Grace, predestination, election, etc.
A person can be a scientist and religious. Contradictions in people’s beliefs and behaviors is quite the norm. Of course picking and choosing parts of the Bible is pointless. The point is to understand the whole Bible juxtaposed with understanding of science.