Various reasons for various industries.

Internet content : in the past there were only passion projects and goofs. Everything you saw was because somebody wanted to make it and they either did it for free, or were already professional entertainers/editors and were practising/promoting. Recently its become an actual career so youll only see people who successfully game the algorithm by trend-hopping and the like. There's less passion, less art, less honesty, just people desperate for money who'll do and say anything to get that engagement. Theres for sure people who create for the love of creation but you won't see it because they're drowned out by the successful.

Games : There's "too much" money invested in big games for them to risk failure with creative innovative projects. They'll do what they think works, which is basically the same thing that worked last time but with shinier graphics. The indie scene is doing well for innovation but you wont get a lot of "quality" there.

TV/Film : it's been reported by a lot of people in the industry that many of them are being created to cater to "second screen viewing", where they expect people to be watching while actually playing on their phones instead. This means they don't aim for subtlety and nuance, they don't try to quietly foreshadow plot points with minor details and will instead have them recap over and over again whats happening.

Music : always been this way. Real music stopped getting made when you turned 20-25. It peaked when you were 15.