Understanding the impact of your policies, but deciding that you have to upset some people for the greater good, still fundamentally involves empathy.
My first post was really about whether Sunak was out of touch, and if all well off people would be. I think if you want to PM, you should know the people you want to lead. I don't believe that having an understanding of people's day to day lives, can be bad for decision making. (If you do know what's involved in the every day lives of people who are homeless, refugees, disabled, etc., and don't feel empathy, you're probably a sociopath, and I suspect not an ideal PM).