There was indeed a mighty opera war going, and Fritz of Wales was supporting the other side (which had hired Farinelli - if you've ever seen the movie Farinelli, they include something of that competition during his guest starring in London) but what Hervey doesn't mention is that Fritz of Wales was a passionate violincellist and that his father disapproved, which had been the first of many musical family differences long before it was Handel vs Nobility Opera (where Fritz of Wales also sometimes played far away from his disapproving family.
Re: Hervey's Memoirs: The Phantom of the Opera