In fact, our Messiah would probably be kicked off of every "christian" forum there is.
Though there would be no doubt that some folk would disagree with some of His posts.
Perhaps some viewpoints in eschatology would be one area of disagreement.
There would be disagreement with folk about politics and Christianity.
Room for debate over the nation of Israel and His viewpoint.
Conflict in posts concerned with wealth and the love of God.
Arguments about unity and divisions in the Christian world.
In fact, it's reasonable to assume there would be many points of disagreement.
Given the range and scale of theology within Christianity.