I could be wrong, of course.
There is a very remote possibility that Cameron does not understand that his job as an elected representative is to put his personal views to one side, and act on the perceived wishes of his electorate.
But I think he has no intention of doing so at all!
Furthermore, he gets angry when others in similar positions of power do what is expected of them.
See:- Cameron to threaten EU with ‘consequences’ if Juncker appointed
His intensive campaign to prevent Juncker being elected as President of the European Commission has not only resulted in dismal failure, but also unmasked Cameron as a blackmailer of the worst ilk.
Angela Merkel, the German chancellor, and Matteo Renzi, the Italian prime minister, are having none of it. Although they may privately wish to appoint a different President, they will bow to the wishes of their respective peoples, and publicly support Juncker.
They are, in fact, doing the job they are supposed to do!
Why should Cameron take issue with that?
You will note that this is an ongoing issue in British politics. The Prime Minister has the power to make or break democracy – alone.
Sadly, most of the time they break it!