Huh? Are you saying that when a Christian witnesses to others that they might be “interfering” with God’s plan?
The Great Commission given to us by Christ is to “go into ALL of the World and PREACH the gospel.” Mark 16:15
I can’t possibly see how witnessing to others could possibly “interfere” with God’s plan.
No, those who identify an act of witnessing, as an act of proselyting, do not understand Christianity.
No human being is able to ‘convert’ another human being into becoming a Christian. Conversion is the work of God.
Man can witness to one another, but we lack the power to convert. (When you find somebody with the ability to create human spirits, then they might be able to accuse them of converting somebody from being the old man to a new man.)