@cyclamenqueen
I totally agree. The monarch in this country is the Head of State, and as such is expected by the state (Government) to participate in state activities. eg; they recently hosted a state visit from South Korea. That is they were expected to host a state banquet; attend certain events with the South Korean officials; welcome the president, etc . This they did on behalf of the Government.
This is why the monarch (now K. Charles) is expected to remain out of politics.
One year they they may host President Trump, and the following year it could be President Biden, etc (I think this has happened).
In the past the Queen had to host Idi Amin, Nicolae Ceaușescu (Romanina president subsequently executed after a coup), and many others. And it is clear the monarch may not always agree with their politics.
Obviously Charles was the PoW for many years and in some cases his personal views have become known (I think he got out of a state banquet with the Chinese, or similar).
This is also why the RF are not allowed to accept freebies, etc, and all wedding presents had to be declared. The rules are the same as for MPs; remember all the fuss over whether Boris had a free holiday or not.
In other words, the main function of the RF is as Head of State. Senior members such as P. William, etc act on behalf of the state (Especially on their overseas tours, etc).
The Charity work of the RF is really a side issue, and the purpose is that the RF promote and support various charities. The late P. Philip started his Duke of E award, P. Charles (as he was then, started the Princes Trust, to support young people in business ventures, etc.