I don't know if you have the ability to read or not. I did point out, in the article you just read, that even I do not agree with the gospel and am offended by it. Hence, as a Christian, I call Jesus Lord and submit my will to Him when I do not agree with Him knowing fully well the reason for my disagreement with Him is my innately evil nature.
If all you reduce the gospel to is radical mercy and love, you have no idea what the gospel is about. It is about addressing the real world problem of SIN as well, which is very offensive to people.