And here's another thing, clown. You're the one who wrote that 3D also means stereoscopic games that need to be played with glasses. For such games in Steam there is also a tag - "3D Vision". So do not confuse stereoscopic games and three-dimensional games.
You also said that in Stim the tag 3D marks games without three-dimensional graphics. You know what's funny? It's the players themselves who put those tags. If a lot of players put a new tag to a game, this tag will be assigned to that game. And nobody in Steam moderates it. And vice versa, if a game receives a lot of complaints about a tag, it will be removed.
So it's illiterate players like you who add a tag to 3D games without 3D. If I find a few thousand accounts who will raid the Steam store together with me and put a new 3DCG tag on some games, this tag will be fixed in the Steam store.