That's utter garbage and what's worse is that it's not even meant negatively, but just goes to show the vast disconnect between the Forsaken's new audience who never had prior investment in them and the actual players who play undead. Being given a new faction with one expansion's worth of lore that fulfills a portion of the Forsaken identity, that being the mad science + dark humor militant element does in no way make up for the complete demolition of all prior Forsaken story to service players who previously wouldn't touch the race with a ten foot pole and for whom the fantasy the nu-undead will provide can easily be met by their choice of humans or worgen, given the extent to which they've been rewritten. The Lordaeronian element of the Forsaken identity, the loss of free will, alienation from their former lives, both in the personal and cosmic sense, the mad science, dark humor, militancy and so forth are all part of the Forsaken, it's not one of these aspects or the other.
That's why Calia has already done irreparable damage because at her very best, she'd still set up a separate "You but better" branch of undead in Lordaeron that'll nullify several of their themes - namely rejection and alienation and co-opt the Lordaeronian part while having come into this position with a set of retcons that render the race more shallow. To have the nu-undead instead wholly replace the Forsaken and shunt a few choice parts of that old identity off to a side group that'll be relevant for one expansion is ludicrous. It'd be akin to the Night Elves being taken over by Azshara, because she's still their queen and unemployed, shift their focus to arcane magic and rebuilding their empire, with Tyrande and Malfurion punted off to neutrality and then say "don't worry, this is fine, the Ardenweald also has long-eared nature lovers who live in night time
".