Games aren't necessarily improved by smoothing out the frustrations. Part of the point is to be challenged, and to have sections which are difficult, and produce anxiety. The joy comes from finding out how to overcome those sections.
Additionally, because everyone will have different trouble spots, a game which has smoothed out the frustrations for the greatest number of people is really a game which doesn't provide much challenge. The worst culprits here would be the games of the mid-2000s, with their heavy cinematics, and extremely low difficulty. Conversely, these games fare worse over time than something like classic Doom: the gameplay was never there in the first place, and the graphics only wowed people 1.5 decades ago.
Additionally, because everyone will have different trouble spots, a game which has smoothed out the frustrations for the greatest number of people is really a game which doesn't provide much challenge. The worst culprits here would be the games of the mid-2000s, with their heavy cinematics, and extremely low difficulty. Conversely, these games fare worse over time than something like classic Doom: the gameplay was never there in the first place, and the graphics only wowed people 1.5 decades ago.