Honestly, with the tweets that reference the Her movie, they may already be in a hole, anyway. Plus, it’s not just the voice, it’s that the ‘character’ of the Sky voice is very similar to Sam in the Her movie.
If I were a jurist, I could easily be persuaded to believe they willingly committed IP theft and attempted to imply endorsement of the Her movie (the production studio?), Spike Jonze, and Scarlett Johansson.
(Of course, that statement would disqualify me as a jurist, so I’ll never know!)