There's no reason to think they'd have to wait a year. High value targets, like SpaceX had they not banned the use of Zoom, would obviously receive priority treatment by the Chinese intelligence community. My point here is that the analysis doesn't need to be done in real time, they could store the data and review it a few hours later, or whenever they wanted.
(For that matter, there is certainly a lot of data that would be useful a year later. Some data could be valuable even many years later. Taking SpaceX as an example, it should be obvious that old data could be valuable.)
