Time after time, the ground reality has shown us that no assumptions of any kind serve the purposes that we might be hoping for.
Any form of criticism should always be backed up by the truth and logic, because we will always face the consequences of our wrong actions. Without the backing of truth in what we say or do, we will only end up hurting others and ourselves. After all, when you judge another from your own point of view, you cannot expect others to share the same picture.