Not only me , but a lot of other members said that the arrogance will be Madara's own grave , and this chapter pretty much covered this perfectly .
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1 - Goes cocky and overrated himself ,
2 - Looks down on others
3 - Thinks he is the best manipulator , (Even Zetsu said that)
4 - Thinks he is the saviour of this world .
Considering all these , that's just pure arrogance , and the guy got stabbed by his "ally" . Just saying that Madara's weak character just got more ruined .