I asked this question out of due diligence, but it probably warrants a big discussion. There's probably degrees to which we do and do not encode our own ideologies.
E.g. I think that machine learning is important to quality control. I have somewhat of a techo-centric view of things. I also see value in "efficiency" when it comes to Wikipedia quality control. It's from this standpoint that I saw the technical conversation and the barrier of developing machine learning systems as critical. So, lots of ideology getting encoded there.
On the other hand, by not specifically building user interfaces, we make space -- we "hear to speech" (see http://actsofhope.blogspot.com/2007/08/hearing-to-speech.html). So, maybe we encode our ideologies to an extent, but we do not continue past that extent and instead make space to hear what others want to "say" through their own technological innovation.
I think it is interesting to draw a contrast between this approach and what we see coming out of Facebook/Google/Twitter/etc. and their shrink-wrapped "intelligent" technologies that fully encode a set of values and provide the user with little space to "speak" to their own values.