No leaders in the Teaching, no disciples of the world attack any teaching, any religion, but carefully study them to find ideas and meanings.
Disciples are inclusive. They accept similarities, not differences. Difference for them creates the power of discrimination. Talking badly about any religion or teaching deprives those people who spiritually profit from them, or urges people to attack them in fanaticism. Ways and means to approach the Presence can be different -- but most teachings and religions seek the same ultimate goal.
The Art of Teaching