Did the Christians become disbelievers solely because of their saying, "Ezra is the son of Allah" and "The Messiah is the son of Allah"?

Question:
Honorable Shaykh, may Allah grant you success. In the statement of al-Thuflayl to the Jews and Christians, "You are the people, if it were not for the fact that you say, 'Ezra is the son of Allah' and 'The Messiah is the son of Allah,'" does this indicate that the Jews and Christians have no errors other than this?

Answer:
They have other acts of disbelief besides this, such as the distortion of the Torah and the Gospel. And the saying of Allah the Exalted regarding the three is also something other than this. However, the discussion here concerns the issue of tawhid (the oneness of Allah), and there are other acts of disbelief, but the discussion is specifically about what relates to tawhid. Yes.