You are confusing letting a nut rant to his heart's content with being schooled. I would imagine that sometimes it is better in an investigation to patiently listen to a person that is so caught up in thier own hubris that they end up answering all your questions. Michale was so busy acting for his camera to create Youtube content that he gave himself away...
Quite frankly, if a woman believes she is being followed/stalked by a stranger, I would hope police would investigate, as they did.
I think it petty of you that with all the legitimate problems facing police that your flag is planted on the issue of discounted food. If thats the best you can do to point a fault, then your privilege betrays you..