Cambrey: Maybe they are aware of those games, just didn't care for them.
I do think its a big part a matter of taste and another the strict rating system blocking many notable western games.
The notable games that seem to be missing are Witcher 3, GTA, Red Dead Redemption 2, Halo, Half Life, Mass Effect, Batman Arkham, and God of War.
Alot of these games are rated Z which is the highest rating of 18 or above (Witcher 3, RDR2, God of War, GTA, CoD, TLoU, Ass Creed. In comparison, even Resident Evil, Yakuza, MGS, and Evil Within has a D rating. That already limits their accessibility compared to other games like Monster Hunt (C) or Zelda (B).
FPS games like Half Life and Halo also arnt as popular in Japan compared to the US, hence their lack of their appearance here.