I think
Google declared "persona non grata" as sponsor of AI ethics conference by ACM
was my original title."Persona non grata" to me was the best translation of "unerwünscht" in the original German headline. There might have been other options but "wanted" certainly is extremely awkward and ambiguous in comparison. But stuff like that keeps happening on HN, it has certainly been a "known bug" for many years, which sometimes leads me to just not visiting or commenting/submitting for a couple of weeks until I've stopped fuming over the unappealable, authoritative actions by someone who doesn't know their limits... ;-)
I regard it as a fundamental flaw; your mileage may vary.
(The German sentence doesn't have that ambiguity)
Why? Because it's the exact result that Google Translator spits out if you translate the original page in Chrome ("Google no longer wanted to sponsor the AI ethics conference"). That's of course just plain incorrect on several levels. I put a lot of effort into finding a suitable and exact translation when I originally submitted it but apparently we are now at the point where well-thought-through and correct work can simply be erased and overwritten with the result of a stupid Google AI. How fitting for this topic ;-))
The problem is the word "wanted" in that sentence can either signify present tense passive voice (e.g. "Google (is) no longer wanted to sponsor..."), which is actually the desired interpretation here, or past tense active voice (which is how I think most native speakers would interpret it).
https://en.wikipedia.org/wiki/Headline#Headlinese
Many English speakers understand headlinese easily, but maybe not so easily when there's a more natural non-headlinese parse of the same phrase!
How would it be interpreted as being the other way around?
Edit: This is the headline when I read it: "AI ethics research conference suspends Google sponsorship"
I realized that it might have been changed now.