They may pick up on moods and feelings, but I am not sure they assess them correctly. I cannot tell you how many times FPs have believed me to be angry with them because they "felt me out" wrongly. A lot of false positives.
I am wary of people who try to tell people they have problems because they do not feel or act like they want or expect them to.
I am disappointed that I have yet to hear a feeler explain their obsession with doing this.