Your point is very well taken. The choice of whose community values to use is an important one. If your goal is to try and exclude some actually popular but perhaps embarrassing opinions, then you are likely to need to incorporate some of the values of other communities where this sort of speech would be filtered.

Applying r/SRS standards to r/RedPill would be an extreme example of this, and a good thought experiment. Could you model what kind of karma score a RedPill post would get on SRS? How would it change what a discussion page looked like?