That’s what I worry about. Of course, if he does inject himself in political issues, he will not be loved as a King.
Very true. As the monarch of England, the King or Queen doesn't get to pick who their subjects are. They are the monarchs of all British subjects, the good, the bad, and the ugly. Any personal opinions are kept to yourself, or within a very small, private group. Even if Queen Elizabeth kept a very detailed private diary during her 70 years of reign, I doubt it will ever see the light of day. People would likely never be told about it, and/or it could be ordered destroyed by family members. Queen Victoria's family chose to destroy a lot of her personal correspondence after she died.