Could Immanuel Kant be an example of confirmation bias? He was a Christian philosopher who is generally regarded as a moralist, not a utilitarian. (I think that's a fair statement; I haven't studied him in depth.)
I just remembered that I upvoted PeterJ's answer, largely because of the last paragraph. However, I now see a problem in ...
The entire reason for philosophy is the prevalence of confirmation bias. If we look at the situations in which 'philosophies' first arose, wherever we find them, they are in response to a habit of accepting reality without contesting the accepted interpretations of its most basic properties.
So the methods of disputation that make something philosophy in ...
Philosophy may fall into all cognitive biases not just confirmation bias.
They may even claim that there are things that can only be understood
by direct experience, and are ineffable or inexpressible, making the
philosophy inevitably mystical.
Buddhism and Taoism talk about getting a pure state of consciousness that is to say a total thoughtless ...