I'm pretty willing to accept the fact that there is no way to write without writing to some cultural context. We cannot simply imagine a culturally unbiased perspective and then write from it. This systemic bias, real as it may be, is unavoidable. As such, I am unable to seriously consider it a problem.
I personally believe it is a problem, but that it cannot be solved at the moment and that Wikipedia may seem a bit "sterile" without it.
However, I think we *do* need to be a bit more careful about things which can be seen if you check carefully, such as "unfortunately"s and "interestingly"s.
Mark