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

I don’t think it is dying down. Didn’t they say that 2021 was going to be a good year for TS4 recently or did I imagine that? I think it’s just wishful thinking from people that obviously don’t find enjoyment from this instalment of the series. Personally I’m torn. I would like the game I’ve invested so much money into to be improved but at the same time I’m ready for a new hopefully much better instalment of the series.