Yes, but you basically can't pay for them. Revenue is basically all from direct cosmetic sales or the battle passes

I see. You can remove 'Overwatch' from my original comment and the point still stands, but I do appreciate the fact check. I know Blizzard from HearthStone and Diablo....not great experiences with gacha there haha (Diablo Immortal, atleast), but those are far from the most popular Eastern games

The battle pass contains loot boxes though, right?

Yes