> From the definition of "Ideology", epistemology is specifically excluded

Considering there are epistemologic ideologies, I'm not sure how you can claim this.

For example, in the West (and now common throughout the world, since most of the world has adopted Western epistemology, whether they admit it or not), we believe in the scientific method -- that if we can observe, measure, and replicate an experiment, we have established 'empirical truth'. The idea that such a process can establish universal truth (rather than simply be individual measurements of how the universe acted at a certain point in time) is based on the Abrahamic notion of an unchanging God. It is certainly an ideology in and of itself. It may be a useful ideology, but claiming that it is not an ideology is just dishonest.