RDZ introduced a new way of playing to the PL. Something that wouldn't be unfamiliar to managers in Italy, Ukraine etc.
Other managers adapted. RDZ did not.
That is the problem. Even Pep reacted. Despite knowing he had the best squad in the league already.
RDZ has gone from flavor of the month...
More believing his own hype. Being called a demi god by the media and eventually being almost unemployable. I honestly think it could go either way with RDZ.