Yes, it is extremely rude, inappropriate, and unacceptable to pee on anyone's front door, regardless of whether they are autistic or not. Such behavior is disrespectful, harmful, and illegal, as it constitutes an act of vandalism and harassment. It is essential to treat all individuals with kindness, empathy, and respect, regardless of their abilities or any other characteristics. If you have concerns or issues with someone, it is best to communicate in a respectful and constructive manner or seek appropriate assistance to address any conflicts.