Why is it that People claim that The Sims 4 is dying down even when it is proven to be a success?

There are also people who say fortnite is dead, and it happens to other games as well. I dont play that game but it still gets updates. Maybe a game is not as popular as it used to be but that doesnt equal dying, unless it was a big and constant decrease in players and buyers, imo. Point is some people are dramatic or just throw terms around XD