I mean, they were so good when they started, biggest metal band of all time, etc. Some people hopped off the bandwagon when the Black Album came out, but overall the streak lasted over a solid decade for most people. They lost more fans when the Load era came around, but for me it ended about 15 years after they started, all the way through S&M, or even a full 20 years if you count everything before St Anger. That’s basically two solid decades of unstoppable, world changing albums from a band at the top of their game, peak of the genre. They were more of a force of nature than a band through that period.
Then St Anger came out, along with the accompanying documentary that revealed a band that had become nothing but a bunch of sniveling, bitchy diva rich kids, and that was the end of that. That album, and literally everything they’ve done since, has been practically unlistenable. Every riff, recorded guitar tone, arrangement, all the lyrics that any edgelord 13 year old could have written. Every bit of everything they've released since St Anger has been total garbage.
Metallica represents the most catastrophic, hard 90 degree downfall of basically any metal band in the genre’s history, and that disappointment can still be felt by people even now, 20 years after St Anger. And speaking of that album, next year, we will be farther from the release of St Anger than St Anger was from the release of Kill Em All. So, if St Anger was the real turning point for you like it was for most fans, then to you, next year Metallica will have been dogshit for an officially
longer period than they were good. But they’re still out there playing, reminding us all of what they once were but are no longer.
It’s not exactly a mystery that people still get riled up about them.