That’s a very arrogant thing to say altogether especially since you are devolving the argument to a question of luck when that isn’t the premise being put forward.
I believe an element of the arguement is that Madrid were a team of galcticos who were difficult to pull together. They needed someone they respected collectively to take hold of the dressing room. Zidane was the right person at the right time - a legend of the club automatically gained buy in from players who had idolised him as a player.
Collectively, the combination of the quality of the squad and their commitment to playing for that manager was gold. However, in big games Madrid were happy to adopt a counter attacking approach despite their wealth of talent and this led to some quarters questioning Zidanes technical coaching ability being that his team of stars could still not dominate teams consistently in the same way as Rijkards or Peps Barcelona or Bayern or more recently Klopp Liverpool, City. Regardless, he got amazing results.
so the argument is possibly that Zidanes perfect storm was Real Madrid and that squad. At Utd , he would have less adulation from the supporters, may not be as revered in the dressing room and certainly would not have as talented a squad. Is he a coach that can get a tune out of any set of players through coaching them to play in his set philosophy and style, interchanging players without losing quality of performance? Or is he, as many suspect, a manager who can motivate and inspire but, without the many factors that contributed to his success at Madrid and in club that he has no emotional connection to, will ultimately will fall short against the very best technical managers in the game?
The argument is not about luck at all so it’s a strange thing to insult other fans about.
