The "ARM China going rogue" story is so weird. Although supposedly Softbank restored control last year? [1] So I don't know where things stand at the moment.
the article says that Wu is effectively still on the job, and Wu's own LinkedIn page claims he's still the boss there.
Having myself been part of a joint venture with the Chinese (in the education space), and having a Chinese employee go rogue, I only advise against western firms (even large ones with clout) from engaging in such ventures. The Chinese will take control by any means necessary and bleed you dry from the inside.
https://asia.nikkei.com/Spotlight/Caixin/In-Depth-How-SoftBa...