Discourses by Brigham Young don't define the faith....the same goes for Martin Luther who has also made some outragous writings (in my opinion) and has had some scandalous histories follow him around.....of course, I could list off some Popes too....and some good old fashion Protestant Leaders that have fallen short of a Christ-Like life.
The truth is found in the Gospels and the Gospels are sufficiant for my understanding of God's nature and his role in my life....but God also reveals to me, in ways that I don't fully understand (but I do accept this as true), direction for my life. Sometimes I make the choice to ignore God will, and follow my own will. I suffer because of this .....
Then has there been any of the later Living Prophets® who has gone on record and said what you've said: BY was WRONG in what he said?
If this is an accurate description of your belief, then WHY are you an LDS member?