I’m neither refuting nor supporting your argument. Please read my words carefully.
What you misunderstand is that is simply not good enough. Players nowadays, even those in casual guilds, feel entitled to clearing not only the hardest content, but the best rewards.
Any content in Classic that presents any sort of challenge at all is met with overwhelming demands for nerfs.
Just some of the many threads made asking for nerfs to content. So, my main point is, the Classic community overwhelmingly doesn’t care for difficult content. They want all content to be beatable through mediocre play, including heroic versions of raids.