Wonder Woman 84 will be the largest endeavor launching on HBOMax this year from anything of WarnerMedia. It'll also be a prominent DC IP in the US that attracts kids, specifically young women and girls, looking for a symbol of enpowerment. Regardless of the controversy on Gal Gadot from her remarks of Cleopatra (which, is a can of worms that has no effect on WW84) or the international numbers not doing too hot (which, can be attributed by COVID and in China's case, a stronger emphasis on films made from China); will be launching in the US on only one of two major platforms.
Movie theaters limited in their operational capacity, or at home with no need to go anywhere on Christmas Day. It's a power move, that'll send ripples to the servers of WarnerMedia's service. Could they do more? Absolutely. I think it's kind of baffling that they haven't expanded HBOMax to Canada and select EU territories at this point. But what else can they really do at this point.