Sterling really seems to struggle to hold together coherent threads of thought and, while he does some things that indicate that his mental status isn't completely trashed, he provides a fair amount of evidence that he is compromised in his ability to think things through. We all have a mental filter (often subconscious) that prevents us from blurting out poorly constructed thoughts, and this filter is impacted when we are over stressed or if we suffer from mental health issues or onset of dementia. Dementia isn't an all at once thing and people with dementia are impacted by stress. The thought filter capacity may be different over the course of minutes, hours, throughout the day. I hate to say it, but I do believe we ALL have thoughts of judgment that are based on people's appearances that are driven by our own personal history. Most of us (these days anyway) filter the discriminatory thoughts with rationale that reminds us quickly to be open and fair and to not make character judgements about people based on their attractiveness, weight, clothing, ehtnicity, race... Yet, initial thoughts do come to us despite the desire to be above such things.
I think that when one's filter is faulty (due perhaps to dementia), the thoughts sometimes come out through words and the person's ability to make sense of them, take them back, reorganize them, often ends up causing further confusion -- even to the point where a person may conclude "I don't know what I am saying or why I am saying it". I think Sterling may be a scoundrel, but I also think he is not in a position to effectively defend himself, and therefore, will continue to dig his hole deeper each time he is challenged. I think that what is happening now MAY connect to a lifetime of racism, but even the best of us have initial thoughts and beliefs that we keep to ourselves -- perhaps working internally to negate any tendency to judge/misjudge based on things we know we shouldn't use to judge people.
I admit feeling a little sympathy for Sterling because I do think his thinking capacity is compromised. He should be advised to keep quiet, sell the team, and try to enjoy the remainder of his life in obscurity with people who care about him(presuming such people exist). I hope is estranged wife and his children are going help lead him to this conclusion. Some people, unfortunately, will enjoy seeing him publicly hung and humiliated. That could be what he deserves, but I'd rather he just went away.