After several weeks of M+, with some changes in between, i can say this afflix is by far the worst one.
After the changes it got, the Ambassador or whatever is called, can be gunned down fairly quickly and it gives a huge buff in doing so, plus it doesnt apply its shield instantly, giving some leniency.
The CC one is a joke, since most tanks can deal with it on their own, and classes like Monk can solo the thing easily.
Dispel which is wrongfully regarded as a heal absorb (Couldve explained that one better Blizz…), can be rough if nobody helps the healer deal with it, but if they do, its easily manageable.
Oblivion? its just garbage, this thing is an utter disaster with a lot of bosses, notably with the last of Mist, the boss is not only huge, forcing you to move far more than usual, but the arena is always covered in poison pools that delete your HP if you stand on them for more than one second, could also mention the last of Grim Batol, a huge boss and an arena cluttered by root tentacles that are basically a death sentence if you get grab by them.
This Afflix just doesnt work for bosses with area denial or lots of movement, another example being the first one of Dawnbreaker, pretty much all of the bosses of Ara’kara, like 3 bosses in Threads, the list goes on.
Removing this one affix alone would make this season more enjoyable, granted its not gonna happen this late at this point, but im likely skipping doing M+ outside of maybe one on Oblivion weeks.