Don, most feuds of the past are safely forgotten. Those that continue to be fought do so because they still strike a nerve - sometimes a different one than originally. Facts of history are mixed with myths and legends, and then often projected onto new problems.

Theatre directors love the "Ring" because it leaves ample space for interpretation. Other operas have clearly-cut heroes and messages, which may not be found compatible with current ideas. "Lohengrin" has been mentioned in that context; but although Wagner clearly identifies with the title hero, he grants a point or two to the antagonists.

Opera goers have learned to live with problematic plots. Those however who only care for the music, miss the point. This applies even to Baroque operas, all the more for "auteuristic" dramas such as Wagner's. And yes, some aspects of the author's personality do matter, in my opinion. -

Present-day "musicals" represent a direct continuation of the opera tradition. Anyone who wants to criticize "opera", must be more specific. And certainly Wagner is not typical of the genre. Beginners who come from Mudcat can be recommended to listen to French 19th century operas first, or perhaps to the cherished "Bartered Bride" (though they may object against some clichés in that one).