Watts was smart, insightful, highly versed in philosophy and religion. Does being an alcoholic or a smoker or <choose your transgression> negate that?
Edit: it’s really sad that you would summarize this complex man as an “abusive alcoholic”. He dedicated decades of his life to learning and sharing knowledge, inspired millions of people, certainly advanced Western philosophy. In his late years he drank heavily - 30-something years after publishing his first book. What an unforgiving hypocrisy! A man with such a complicated story, a difficult relationship with his dad, failed marriages, just human drama that _all_ people have or will experience in their lifetime… what right did he have to disappoint you so tremendously?