That's a broad generalisation which simply isn't true. This gen has been great for games.
Bethesda's publishing arm has been killing it with games like doom, prey, dishonored, wolfenstien, evil within, etc. We also got great RPGs like Witcher 3, Persona 5, Breath of the wild, Divinity Original Sin 2, Kingdom Come Deliverance, etc.
Ubisoft has come out with great games like Far Cry 5, R6 Seige, Watch Dogs 2, etc.
Then there are awesome Japanese games like Yakuza 0.
Also, a wealth of PvP multiplayer titles like Overwatch, Rocket League, Titanfall 2, Battlefield, etc.
These are only off the top of my head and there are many great games released in the past 5 years.