The problem is tho (and I havnt read that full post/article yet) does Roberto's model work? Yes getting the whole club singing from the same Hyme sheet, playing the same style from top to bottom is great. If ur building a club obvs that's the way to go but....
If your getting the whole club playing a flawed and I dare I say maybe "out of date" tika taka style then you've got big problems, even if in theroy the method is correct.
Roberto did not play this style last season. He of course introduced a more possesion type of play which worked well. But this season he pushed it much more to complete tika taka barca boring keep the ball at the back play. And tbh unless you have a special team like the barca of 5yrs ago, it's proved not to be successfull.
If his style of football is not succesfull, he takes the whole club down with him!