Valve is obviously complicit in enabling gambling habits with lootboxes and whatnot, but I'd say that's more of a general gambling issue that affects a wide slew of people, not just the younger audience
Roblox is far more heinous in terms of exploiting their younger audience, check out some of the videos from People Make Games
You could maybe sub half the doubianjiang with low sodium miso, its not an exact subsitute but i figure it'll still provide that strong flavor you want