I don’t know everything there is to know about the game, I know everything there is to know about Fury Warrior, within reason because there is always something new to be discovered, but the young theorycrafters are not coming up with anything new. The WoWsim has only slowly progressed closer and closer to outputting exactly what Landsouls humble spreadsheet did over a decade ago.
Ret isn’t a scaling class, they are getting upfront increases while Warrior is more to do with scaling. Also, I disagreed with the Ret buffs, but they are here now and Ret is still worse than Warrior and it will still be worse than Warrior in T9. You used sim numbers that were a long way below what I simmed, so either you were lying about them or you did something wrong.
Take into account the WoWsim is labeled as Beta/Alpha, different classes have different levels of accuracy, the default settings on some are more optimised than others and the sim lives in an environment that doesn’t exist in game, it’s not a boss encounter.
Warrior in T9 will be fine, it doesn’t need buffs unless the goal is to make it top dps, which it doesn’t need to be.
Ashen Verdict is the ICC reputation with the ring. If you’re talking about Death’s Choice/Verdict the trinket, it will be used until Ruby Sanctum. DMCG is also marginally inferior to both Dark Matter and Comet’s Trail. Mjolnir will be replaced as soon as you get an ICC trinket, Death’s Choice will remain.
Warcraftlogs shows that Warriors are statistically fine. They are not top of meters, but they can top Kologarn, Cat Lady and are extremely good on Mimiron. Warrior is completely fine aside from Hodir, where they have little to no value.
We’re also only 5-6 weeks into the tier, Warrior will continue to scale. Warrior was bad in T7, it’s fine in T8. It’s not a strong spec, but it’s fine. In T9 it will gain more ground, no basis for your fears.