From the interview they did just days ago:
Is Weakauras being canned entirely? I just use it for aesthetic purposes.
Ion Hazzikostas said:
No, absolutely not. I just want to super clarify there, a lot of the shorthand here has been like, “oh, Blizzard’s killing Weakauras”. That is not what we are doing. We’re going to have a technical blog rolling out for addon authors in the next day or two that lays out the system we have in place, but it’s really focused specifically on reading combat events and combat state whereas in the past when we disabled, like we wanted to break add-ons or limit what add-ons could do.
h ttps://www.wowhead.com/news/combat-addons-disabled-in-end-game-content-in-midnight-378679
Clearly he was wrong or was lying.