You might chalk it up as just a mistake, since debates about religion would normally appear in a religion forum.
But the problem is that FR religion threads are held to very high standards of personal conduct -- no insults, no hint of profanity, etc. -- and anyone willing to defend the science of evolution is not likely to visit a religion forum where they are condemned as promoting a:
By contrast, "news-activism" forums usually allow more free-wheeling discourse, with blunter, rougher language -- language which might even approach in its mocking, insulting tone that of the article above.
And just in case we don't use such language here, then YHAOS has prepared a list of alleged insults against Christians from FOUR YEARS AGO to "prove" the point.
So, my guess is they classified it as News/Activism for the purpose of inviting folks like you and me to defend science, in the hopes of provoking us into language that is as insulting to them as their article above is to us.
Somehow, this makes them happier.
Having already considered those two possibilites, it seemed polite to pose the question and provide the opportunity for clarification if it was a simple mistake.
Defend Science? ... Bwahahahaha ... thanks, I needed a good laugh this morning!
Indeed, I wandered into an evolution thread in the Religion forum a few days ago. I didn't realize where I was and violated the standards with my second post, as the mod was quick to point out. I usually look to see before I wade in.