I won't judge the man as someone else I respect said that is not a good idea to do so.
But I will say that his writings came into my life at a time when I was re-evaluating what it means to be a Christian and what it means to follow Jesus. For me, Brian helped me to get back to what Jesus said and taught as the basis for what I believe Christianity should be and what it means to follow this man from Nazareth. Especially in his book, "The Secret Message of Jesus", I came to see that Jesus' teachings are not really about how to go to heaven someday, but how to bring heaven to earth today. So I appreciate that Brian's ministry is more on "let's get back to what Jesus taught" than on shoring up religion, orthodoxy, or church structure. Brian is still evangelical in the sense that he believes that Jesus brought and continues to bring good news. But, yes, he is uncomfortable (and sometimes openly critical) of the way some evangelicals interpret Jesus almost entirely through either a Pauline or a Nicene lense.
As long as Brian continues to point to Jesus, I find it hard to be critical of him.