You're probably correct. I grew so frustrated by the continually falling standards of operatic singing--and constantly complaining about it--that within the past couple of years I essentially gave up on the art form. And what I've seen and heard during my now infrequent encounters with opera, whether live, at the cinema, on television or online, has not persuaded me that things will improve anytime soon. During discussions with some of my relatives, as I come from a family of opera lovers (including singers) rather than balletomanes, a few (but not the singers) would ask me why I would rail so passionately against, for example, a famous lyric coloratura for her under-supported, flat, twangy and squeaky singing. Why not just ignore her, let her fans cheer and basically live and let live? And I would reply that watching her slip and slide through the music on the world's most legendary stages offended my sense of justice. I was offended for the sake of her more accomplished predecessors, for other lyric coloraturas, though flawed themselves, who could do a better job, and most of all for the composers, whose music was being was being so grotesquely abused.
No one deliberately gives a bad performance, and generally, though Lord knows I flunk sometimes, I prefer to pass over in silence rather than to criticize harshly. (Choreographers, directors and conductors are fair game.) But I can understand detractors. It's not that they're ornery or bear a personal animus against certain dancers. I believe that they love ballet passionately and cannot bear to watch a substandard version of it. For my part, I don't have a horse in this race. Frankly, I don't expect much from ABT anymore. But I think a lot of what we're reading here is a cri de coeur from people who do love ABT and despair for its future.