Overwatch players expected a lot more for its 10th anniversary in-game event. For many, grinding for loot boxes that contain old skins with new colorways and some sprays didn't feel worthy of such a significant milestone, not to mention the huge amount of games you have to play to earn them in the first place.
In a game with a massive catalog of cosmetics—many of which were only available for a limited time—players had hoped there would be a way to earn them through the anniversary event. It was a reasonable expectation to have considering Overwatch 1 used to offer anniversary loot boxes that contained almost everything that has ever existed in the game. And it didn't help that the Chinese version of the event seems to shower players with rewards, some of which aren't even available for everyone else, like skins from old seasonal battle passes.
