Agreed.
He even offended the disciples but not by saying, "Duh, dumb*ss!" He would offend them by pointing out when they were wrong, but thought that they weren't - telling Jesus he could have sold the oil and perfumes of the women washing his feet, telling the children to stay away.
Some argue that Jesus called Peter Satan, so they can call people dumb*ss.
But look at the passage:
22Peter took him aside and began to rebuke him. "Never, Lord!" he said. "This shall never happen to you!"
23Jesus turned and said to Peter, "Get behind me, Satan! You are a stumbling block to me; you do not have in mind the things of God, but the things of men."
Peter rebuked Jesus, saying that he would never have to suffer nor be sacrificed.
He is telling Peter that he is getting in his way, and most Christians will understand that those temptations may have come from Satan himself, so it is even possible that he was directing that comment to Satan.
I don't think the point of the Gospel is to offend people, but to speak the truth, regardless of whether people find it offensive. If you tell people that it's more difficult for a wealthy man to enter the Kingdom of Heaven than a camel to pass through the eye of a needle, they will be offended. If you tell people that those who exhault themselves will be humbled, and those who humble themselves will be exhaulted, they will be offended. If you tell someone that everytime that they tell someone to go to hell, everytime they are rude, every time they tell someone looking for food to go get a job, they have done the same to Jesus, they will be offended. If you tell people that Jesus says that we are to become a servant for one another, because it has no social status people will be offended.
They will become offended, angry, defensive, beligerant, and claim that you are the one with the weak faith, because you are too "nice."