Colin Kaepernick called (https://en.wikipedia.org/wiki/Colin_Kaepernick) from the ship that already sailed, and he'd like to remind us all about the 1968 Black Power Salute (https://en.wikipedia.org/wiki/1968_Olympics_Black_Power_salu...) while offering a discount on tickets to the Summit Series (https://en.wikipedia.org/wiki/Summit_Series).
Politics and sports have been intertwined for as long as there have been organized sports (https://en.wikipedia.org/wiki/Ancient_Olympic_Games#Politics). If e-Sports are in fact Sports, and if Blizzard intends to exercise control over political speech of ostensibly independent players, then ultimately Blizzard has accepted responsibility for its corporate political speech via the sport, which evidently includes a pro-mainland stance on Hong Kong.