You think Flick didn't do much compared to what Xavi did but I think it's because Real Madrid didn't do well last season is why they made it out. If Real Madrid was really the way they are all this while? Believe me the way they were fighting and all others way to make it to be first team on the table, it would have been impossible for Barcelona to win Laliga last season but Real Madrid lost its 3 El clasico, there was nothing to show off about their performance.
Hope you know when the La Liga league started this season, Real Madrid players were fully fit, Barcelona still dominated the La Liga league, and topped the La Liga league table. So even if Real Madrid doesn't experience injuries this season, Barcelona would still beat Real Madrid in the race for the La Liga title because Real Madrid was not clinical enough this season. Don't discredit Barcelona's wonderful performance this season because Barcelona was above Real Madrid this season, and it's not acceptable for you to use what happened to Real Madrid this season and ignore Barcelona's performance.