I'd disagree.
Having content that nobody can clear is bad.
Having content intended to be casual that few can clear is bad.
Having content that only a few people can clear is called endgame, and it's the challenge that draws players to it in the first place. If everyone could clear A4S in one lockout or Savage Coil without much effort, those content would be trivialized. Their impact and their effect on the players would be diminished severely. The game needs a challenge to remain healthy. It's only bad if everything is too challenging, or nothing is too challenging. Currently the game is leaning toward the latter and needs to swing back toward the middle.
