I think low life scum is a little bit harsh.
These kinds of people generally are not scum. In my experience when these people are discovered I find that they typically lack self esteem, have poor communication skills, they feel excluded from district basketball and on the outer because of their lack of success and feel that they have been victimised in someway. Generally these conditions flow throw to their own children which reflects in their lack of basketball success, inability to take on feedback because of the belief, due to their parents skewed perceptions, that they are being victimised whenever they receive constructive feedback. This just drives these sorry souls to make ridiculous accusations and statements as an anoymous online forum user.
Generally, when you do some research, these personality flaws flow into all other aspects of their life, be it professional, social or family life.
These are sad individuals and I really feel sorry for them.