That is categorically different than the accusation you laid out: that the answer given concerning profit is invalid.
Simply put, you do not need to read all of scripture to know that murder is sin — not even the ten commandments — in Proverbs it says feet quick to shed innocent blood is an abomination to God.
Likewise, you do not need the whole of scripture to say that God is concerned with the hearts of men. (Is 58, 3rd Jn, James, Jesus’s statement that God seeks people who will worship him in spirit, and more.)
I should think that you do not understand scripture, if you cannot see that in God’s quest for our hearts He makes it profitable (not always in the temporal-world) to seek Himself — and that is Sam’s answer as to why the Gospel is good news for even homosexuals.
Have a wonderful journey on the road of life.shalom b'SHEM Yah'shua HaMashiachShabbat Shalom !