In the first place, so much of the aesthetic is based on gangster culture. Black gangster culture specifically. Based off of the actual real problem of black violent gang culture . How can that be considered good in any way?. And the music itself is low class, simplistic and has no real melody. i don't know why anyone likes it to be honest.
And White or Asian people copying it are worshipping black gangster culture because so much of hiphop and rap is based around that. Just look at the lyrics and music videos and what the "singers" wear and how they conduct themselves. All the tattoos , too many metal piercings, stupid amounts of jewelry (again , its based off of materialistic gang culture) just all around uglyness , rude gestures and behaviors, trashy . In general its all just vulgar.
And why is something that was invented decades ago always promoted like its "cool and modern"?
Not sure if you're interested, but try out power metal if you want to experiment with metal, but like a cleaner sound. As someone who's not a fan of all that growling shit, when I first discovered power metal, metal went from something I never listened to, to one of my favorite genres. It's also often more positive and aspirational.
Sabaton is a good starting point; Resist and Bite, and The Last Stand, and the classics like Primo Victoria, and Winged Hussars. As well as many, many more. Interesting and distinctive style, and it's really cool how they mix history in there as well, from all sides. Rorke's Drift. Even Ghost Division. The Last Battle.
Hammerfall - Way of the Warrior.
As well a classics like Manowar - Sleipnir, and Iron Maiden - Alexander the Great.
And plenty more, but I won't flood you with it. I'll just hit you with one more, because I think the mix of power metal and rolling R's is hilarious: Powerwolf - Resurrection By Erection. Not their best song but, again, that R roll!
This is a point where I reveal myself as a pleb who doesn't understand genres well and isn't careful with his words. Most of those bands you listed are well within my purview and I love the heck out of them, though they are the limit of where I'll go.
So I should have said I hated "black metal" as I think is the better label, but to me that's what heavy metal is, wherein most of what you listed is just plain ol' metal. Though I know I'm probably in the wrong there.
Also Back in Control is Sabaton's most underrated song.
I am beyond furious that you didn't list a single Stratovarius song.
I've got a lot on my plate, can't do everything for you!
That said... you are correct. I should have.