47 is right in stating that the issue is not dogmatic. A number of things concerning creation have been defined in a dogmatic way, but the meaning of “yom”, the Hebrew word normally translated as day, is not among them. Thus, there is no need to stay incognito on the issue, but there is a need to exercise charity toward those holding alternate opinions on the issue and to remember that one’s own personal interpretation does not hold the weight of dogma.
There is much more involved in the controversy of "evolution" than the mere meaning of the word yom, as you surely know. What we are dealing with here is not merely the interpretation of the "six days of creation" but the entire first eleven chapters of Genesis.
"Evolution" is not a mere "spiritual" interpretation of the opening verses of Genesis. It requires the "demythologization" of the first two parashiyyot covering the first 1948 years of human history. "Evolution" means the individuals mentioned in the chronologies in the first eleven chapters of Genesis are myths (adopted from pagan mythologies, G-d forbid), that there was no Flood, no Dispersion, etc.
There are plenty of Orthodox Jewish evolutionists, and though I disagree with them, at least most of them confine their "demythologization" to (at most) the first three chapters of Genesis. Once Adam and Eve are created the following eight chapters are understood as actual history. This is something chr*stian evolutionists absolutely refuse to do.
I'm a little disappointed that anyone would pretend that all that is at stake here is the correct translation of the word yom. Surely you know better than that.