This isn't news.
Likely isn't even specifically about Activision-Blizzard either...
Global fixed income markets today are running either flat or negative yields.
When large family offices that manage billionaire private wealth have large allocations of their investment portfolio sat in "safe" asset classes that right now aren't generating real returns as a function of the current state of the global economy, they need to scale up the portions of their portfolios that go into riskier assets that bring in the bacon to make up the returns.
This means proportionally more equity investments and hence, putting chunks into diversified businesses across the more "healthy" sectors of the global economy.
Video games isn't doing too badly and Activision-Blizzard is one of the more stable companies around. They also aren't going to be as badly hit in terms of cashflows by the manufacturing delays and disruptions that COVID-19 ripping it's way through most of East Asia is causing, in contrast to say a Nintendo, Sony or MS investment would see for example.
Finally, the other effects of COVID-19 ripping through the West and forcing potential shutdowns of schools, universities, private company remote/home working policies etc, is that there will likely be a marked increase in sales revenue for digital distributed games and IAPs, so a company doing most of it's near-to-mid-term revenue from those sales channels will likely do very well over the next several months.
So yeah...
This is about making a quick buck to ensure some large funds and family offices make up their annual ROI % targets.