We mortals have no business trying to judge the salvation of another, but we judge people day in and day out with God-given intelligence. We judge another adult before we leave our children under his/her care. We judge who will be a good friend of ours. God make us intelligent in order for us to judge things that affect our ourselves and our families.
I agree it is not our place to judge the immortal soul of another. That is reserved for a higher power. But we can judge what people do. Without some aspect of judgment on the acts of another then morality as a practical concept is meaningless. The question always comes down to the basis of one's moral positions. If they are based on the concepts of men then they can be quite changeable and in the end ultimately so relative and non-specific as to allow them to be argued into non-existence, at least as a uniform code that guides our actions over the long term in a consistent and ethically defensible manner.