Look at what "stumbling someone" means in the world of the Watchtower -
Stumbling implies that, by your words or actions, another person stops being a Witness. These potential "Stumbled ones" are also labeled as "new" to the religion or "spiritually weak."
So, by doing something that may or may not be wrong in the eyes of the Almighty you are condemned for another's lack or faith or weak faith.
No personal responsibility!
Yet, when the Watchtower does wrong we are reminded that the Governing Body is made up of imperfect men.
Double standard!