There are those who castigate Castaneda for one reason or another- mostly the usual run of envious and inspirationally bankrupt academics-
and there are others who regard his contribution to understanding the human condition as perhaps without peer in the twentieth century.

To form an eligible opinion you would need to read his literary ouevre in sequential order from first to last.

You suggest the term 'Freak'...; it has ambiguous connotations in a dictionary; I would regard it as a term of endearment, a badge of honour.

FHO.