That's your view. When linked with 1 Cor 1:17, it means Paul planted the seed being the preacher of the word, his forte, Apollos watered meaning he baptized, and God added to the body of Christ as in Acts 2:47
what does it do say he did?
PREACHED!!
he did not baptize people in the Bible!
so, you are ADDING to the WORD of God here!