Thing is they weren't being replaced quickly at all they were incredibly good
Why? Because people were still using these OVER anything you could get early in Shadowlands. These might have well been have used during raid progression in Shadowlands which is mad.
So excited that we won't have to wait to pull bosses in the new raid because one mage's font has 30 sec left on it's CD. :D
They waited until a week before SL to nurf compendium and a bunch of Trinkets people were likely going to have on for leveling. The devs constantly talk about there tight timelines and how difficult it is to get stuff done on time but they are wasting time on irrelevant changes. Instead maybe fix more of the dozens of bugs the half finished pre patch broke.
During the early stages of TBC some classic trinkets were still viable and amazing, it's not the first time that something like happened so... why then change it?
Did we really need THREE posts on this one topic? Really?
SO, the thing is, we gonna get 10 lvls, but our current gear is better that the gear we gonna get on the next exp. So instead of making shadowlands gear stronger, so we can feel stronger (thats what's suposed to happen when you level up). Make your old gear weaker, so that in the end, even with more 10 lvl and "new exp" gear, you are actually weaker that you were before our nerf...My problem is not that blizz is nerfing things, that happens, my problem is that they are actually being lazy, and instead of doing better and relevant trinkets to shadowlands, they prefer to nerf the old ones...
I think they have some sort of algorythm to affect most of their trinkets including those in shadowlands and by nerfing their overall power scaling down it affected the bfa ones aswell. Bfa trinket nerft might aswell have been a by product of shadowlands trinket nerfing.