Is this news? I think read this about five years ago. Also it's not a scandal but just a way to cope with degrading batteries. Incidentally my own older iPhone

Is this news? I think read this about five years ago. Also it's not a scandal but just a way to cope with degrading batteries. Incidentally my own older iPhone noticeably slowed about two weeks ago although it's only a feeling and I have no way to verify this.