An important and relevant terminology for what you describe in this article, as I've heard it, is called lookism. Lookism is discriminatory treatment against unattractive people. In fact, in the US in the 70s, there used to exist laws that prevented people from appearing in public if they were deemed "too ugly."

In recent years, it seems like the mobility for physical appearance alterations has increased (makeup, plastic surgery, etc.) but I believe it's created a system where beauty and class has become intertwined - only the rich can afford expensive surgeries, makeup, beauty products, and the right grooming tools to look a certain way.

In this regard, I fear that lookism is becoming a proxy for classism, which is why I personally always try to avoid basing judgment on individuals on appearance (agreed, however, that this is a highly complex issue).