Clearly these people believe "love is unconditional".
The absence of judgment would mean there is nothing anyone could say or do that would cause you to abandon them. It's a beautiful thought but in reality everyone has "deal breakers" or things they refuse to accept whether it be cheating, verbal/physical abuse, or neglect of affection and intimacy. It's called self-esteem!
There is always a "reason" why we say (yes) to some people and (no) to others. Everyone has their own "preferences". For example a man may not be attracted to overweight women or a woman is not attracted to men who are shorter than her therefore they're not open to dating them. Simply put "they're not their type".
We love people (selectively) and (conditionally).
Like attracts like and most people want to be with someone who shares their (same) values. If a person doesn't they may not rule them out as being a "friend" but they may decide it's best not to become romantically involved with them. Very few people have an "open door" policy to (all people) that cross their path.