Lusitano,
i found the same thing as you, about saying that the most important thing that Jesus did was the preaching work.
i found it in the daily text for saturday 18 march.
Saturday, March 18
If anyone would minister to me, the Father will honor him.—John 12:26.
Among the crowds in Jerusalem were some Greek proselytes who evidently were so impressed with Jesus that they asked the apostle Philip to arrange a meeting with him. Jesus, however, refused to be distracted from the more important matters that lay ahead. He certainly did not want to try to gain popularity in order to avoid a sacrificial death at the hands of God’s enemies. So after explaining that he would soon die, he said to Andrew and Philip: “Whoever is fond of his life destroys it, but whoever hates his life in this world will safeguard it for everlasting life.” Rather than satisfy the curiosity of those Greeks, he recommended following his self-sacrificing course and said the words of today’s text. No doubt, Philip carried this positive message back to the inquirers. (John 12:20-25) Though Jesus refused to be distracted from his main purpose of preaching the good news, he was not always thinking about work. w15 10/15 3:13, 14
In French it is even clearer (but that might also be because english is not my first language)
Bien que Jésus n’ait pas voulu se laisser distraire de son objectif principal, la prédication de la bonne nouvelle, il ne pensait pas qu’à travailler. w15 15/10 3:13, 14.
Jesus was sent to earth to fulfill the scriptures, that was his main objective in my view, not the preaching work. I think it is appaling that they portray Jesus as someone that is just like JW's, a 'full time pioneer'. JW's say they are like the first century Christians. But instead of acting like first century Cristians, they make the first century Christians look like 21st century JW's. not the other way around.