Creation myths are theological dogmas not subject to revision and improvement. As a matter of fact, questioning such dogmas can lead to being considered spiritually a weak or a backsliding Christian.
Comparing the dynamism and change of evolution to the static stay and durability of creation myths is not an adequate analogy.
IMHO, if my church changed its creation myth as often as the evolution theory is changed, I’ll stop believing in any Spirit direction for my church leaders.