Biological evolution is science, neither ‘secular’ nor Christian. Unbelievers do not believe God has anything to due with its outcomes, and that random chance (that may be redundant ; - ) is a major driver.
Christians should, I believe, know that God is sovereign over time and ‘chance’1 in his providence, and we can conclude that from our knowledge of his providential interventions in the lives of his children and for which we have – yes, one more time – factual evidence (not to mention abundant scriptural evidence). Unbelievers will of course dispute that, especially if they have predetermined in their badly mistaken worldviews that the supernatural does not exist.
The lot is cast into the lap, but its every decision is from the Lord.
Proverbs 16:33
So, evolutionary creationism (or evolutionary providentialism ; - ) is a legitimate discussion for Christians to engage in and not an empty term. (I don’t make a huge distinction between theistic evolution and evolutionary creationism, probably because I am not familiar with the nuances of each. That the former term could be more deistic I suppose might be one difference.)
1 Regarding time and chance, yes, Ecclesiastes says “time and chance happen to all”, but that is another discussion. (Much of Ecclesiastes is written from an everyman perspective, not necessarily from a godly one or God’s.)