Have you read it?
Check out 1 Cor 7. It's pretty clear that Paul is giving personal advice and not speaking a commandment from the Lord, unlike Romans 10.
I concur re the preaching of God ordained man/men
John the Baptist Prepares the Way
(Mark 1:1-8; Luke 3:1-9, 15-17; John 1:19-28)
¶ About this time, [Lit. In those days] John the Baptist appeared, preaching in the Judean wilderness
The Compassion of Jesus
¶ Then Jesus began traveling throughout all the cities and villages, teaching in their synagogues, proclaiming the gospel of the kingdom, and healing every disease and every illness.
Mar 16:20 Then his disciples [Lit. Then they] went out and preached everywhere, while the Lord kept working with them and confirming the message by the signs that accompanied it.
Act 28:30 ¶ For two whole years Paul [Lit. he] lived in his own rented place and welcomed everyone who came to him.
Act 28:31 He continued to preach about the kingdom of God and to teach boldly and freely about the Lord Jesus, the Messiah. [Or Christ]
1Pe 4:6 For unto this end was the gospel preached even to the dead, that they might be judged according to men in the flesh, but live according to God in the spirit.
Rev 14:6 And I saw another angel flying in mid heaven, having an eternal gospel to proclaim unto them that dwell on the earth, and unto every nation and tribe and tongue and people;
...with Christ as the subject..
Act 8:4 They therefore that were scattered abroad went about preaching the word.
Act 8:5 And Philip went down to the city of Samaria, and proclaimed unto them the Christ.
Act 8:6 And the multitudes gave heed with one accord unto the things that were spoken by Philip, when they heard, and saw the signs which he did.
Act 8:7 For from many of those which had unclean spirits, they came out, crying with a loud voice: and many that were palsied, and that were lame, were healed.
Act 8:34 And the eunuch answered Philip, and said, I pray thee, of whom speaketh the prophet this? of himself, or of some other?
Act 8:35 And Philip opened his mouth, and beginning from this scripture, preached unto him Jesus.
So, even when a person is "deaf" he/she can still be shown the gospel according to Acts 8:35
Act 9:19 and he took food and was strengthened. And he was certain days with the disciples which were at Damascus.
Act 9:20 And straightway in the synagogues he proclaimed Jesus, that he is the Son of God.
1Co 1:21 For seeing that in the wisdom of God the world through its wisdom knew not God, it was God’s good pleasure through the foolishness of the preaching to save them that believe.
1Co 1:22 Seeing that Jews ask for signs, and Greeks seek after wisdom:
1Co 1:23 but we preach Christ crucified, unto Jews a stumblingblock, and unto Gentiles foolishness;
2Co 4:5 For we preach not ourselves, but Christ Jesus as Lord, and ourselves as your servants for Jesus’ sake.
Excellent OP.