Counsellors, being people, do indeed have biases and limitations. But, as Fizzyo said, good counsellors have learnt in training to keep negative feelings out of the therapy/counselling so as not to harm the "client". If a counsellor feels they can't work with you because of their own "issues" they "should" refer you to someone (another counsellor) who can help and listen without their own biases or prejudices tainting the therapy. I wish you luck