I never underestimated man-managements skills. I said it is important. Ancelotti made a career on that.
I said it is strange in 2018 to have that as your best skill.
The time is long gone when that was enough (ask Anceloti and his recent history will give the answer). We are not in 2002, 2003 anymore. Football has evolved.
I am not talking about any hyper-sophisticated intricacy that by itself does not achieve anything. (If that was the case Marcelo Bielsa would have been winning titles every year). But Zidane is nowhere close the new generation of great tactician managers able to build teams (Pep, Simeone, Conte, Pocetino, Tuchel, Sari etc)
He has overachieved compared to his abilities and it partly comes down to one of the best squads in the recent history.
It is undeserved compared to the work that these other managers have done that is not reflected accordingly in titles.
PS: Mourinho is a different story altogether. Nothing to do with his man-management skills per se (not that he was good dealing with egos). He has been in decline tactically since the day he left Inter, although his tenure at RM was not unsuccessful. Every year he seems less and less able to cope with how football has evolved. In 2004 he was a pioneer, now he is like a runner who tries windedly to stay on course with everyone else, but it becomes all the more difficult with every new round