I said no such thing. I think you are arguing semantics here. “They found that when angered, people are more likely to seek violent video games for an emotional release” at worst implies incorrectly that people actually engage in video-game-seeking behavior rather than self-report increased interest in video games. But that’s a relatively unimportant distinction in comparison to the overall message here. I said nothing about “un-angering.”

If you are concerned with the final clause, “despite the fact that playing violent video games does not seem to actually provide that release,” this is in reference to the previous research literature on the ineffectiveness of catharsis. I never claimed that this was tested in the current study.

They found no such thing.

They found people who were angry and believed in catharsis found them appealing, as opposed to angry people who disbelieved in catharsis found them less appealing.

None of this addresses how quickly the subjects became ‘unangry’ which is what your sentence I quoted implies.

To reach the conclusion you propose this experiment would need to have 3rd control group that wasn’t allowed access to ANY video games and then at some timeframe later poll both the main group and the control group on how angry they still felt.

Here are a few citations for the issue:
Warren, R., & Kurlychek, R. T. (1981). Treatment of maladaptive anger and aggression: Catharsis vs behavior therapy. Corrective and Social Psychiatry and Journal of Behavior Technology, Methods and Therapy, 27, 135–139.

Geen, R. G., & Quanty, M. B. (1977). The catharsis of aggression: An evaluation of a hypothesis. In L.Berkowitz (Ed.), Advances in experimental social psychology (Vol. 10, (pp. 1–37). New York: Academic Press.

Tavris, C. (1988). Beyond cartoon killings: Comments on two overlooked effects of television. In S.Oskamp (Ed.), Television as a social issue (pp. 189–197). Newbury Park, CA: Sage.

And here is a quote from Tavris (1988):
“it is time to put a bullet, once and for all, through heart of the catharsis hypothesis. The belief that observing violence (or ‘ventilating it’) gets rid of hostilities has virtually never been supported by research”