When has your weapon or your gear been used to drive the story and the lore. It isn't just a gimmick to get people to play again... "Oh come back for legion and we'll give you this badass weapon for free."
The real problem is you special little snowflakes who think that gear should be a monument to your accomplishments.
The weapons are part of the story, they help drive home identity and give the player the sense that they are heroes. Whether or not millions of other people have accomplished the same thing before them is irrelevant. Like it or not, while this is primarily a multiplayer game, there is a single player aspect that cannot be ignored.
Your version of the game has everyone except for the elite 0.01% wielding curved sticks with gems, scuffed up butchers knives, and generic barbarian swords. Its boring and not something I am interested in playing. I am not just a cog in the machine, or some random cannon fodder.
If you are actually playing the game you know that someone who is investing the time can have a really powerful version of Ashbringer while another can have a much weaker version. So your real issue is not the power inherent behind said item, but how the weapon looks, and that the look alone brings prestige and honor. Which is exactly what we would come to expect from some elitest asshole who thinks that because he and 19 of his friends didn't bathe, eat, sleep, or go to work the week a new raid is launched and cleared the content before anyone else even got a glimpse of it, somehow makes him/her special. It doesn't.
I was never impressed by the statues that paraded themselves around Orgrimmar with their Sulfuras or Thunderfury. So really you haven't lost any "fans" no one cared what you looked like or accomplished back then, and now even when everyone wields the same weapons... I still don't care about what gear you have obtained or what you have accomplished.
I would love to play a game void of elitest pricks who want nothing short of a dull black and white experience for everyone except themselves. So go ahead... take away my artifact I don't care. But to me... regardless of how shiny or pretty your gear and matching weapons are... you will always be the guttersnipe of this world worthy of no more praise than that given to vagabond on my way into the super market. At least THAT dude has a story to tell.
We all wait on bated breath for you to tell us the tale of how you got your shiny purples... nah jk... no one cares.