Actually Silman's Complete Endgame Course is beginner friendly as he explained well the concepts in his book. It is not surprising that it has many positive reviews as it is really well written for various level.
I know a a master who teaches chess at scholastic level. This is his method. Study endgames and tactics. He has many students that are doing well. Many masters advice that a beginner should study endgames.
... the idea that studying Silmans endgame book will help the Op from dropping pieces, developing harmoniously is by any standards rather far fetched and i have really no idea why you and these other people are advocating it. ...
Can you quote a specific example of that idea being advocated?
I am sorry I have no idea what you are talking about. I would not advocate any of Silmans books to a 1100 rated player, except maybe as fuel.
The idea that an 1100 rated player who is dropping pieces left, right and centre should study King and Pawn, Rook endgames etc in order to improve is hilarious. ...
How much "King and Pawn, Rook endgames" stuff is supposed by you to be in the beginner and 1000-1199 sections of Silman's endgame book?