I pray that this is a mistranslation otherwise this would be hands down the most disappointing moment of the entire series.
I swear to God that Oda possesses some sadistic glee at the prospect of assassinating the character integrity of the Yonko. Linlin, Kaido and now Whitebeard have all had their initial respectable character traits gutted for the sake of plot or wanking shit characters (feck you Oden).
Linlin went from a dual edged sword of ruthless cunning and berserk rage, to a blunt knife with a temper tantrum.
Kaido went from a 1v1 doom seeker who yields to no one, to a cheap shotting bitch with a plastic spine who is forever suffering from Post Traumatic Samurai Disorder.
Now, Whitebeard has gone from a man of iron clad principles who was consistently stated and portrayed to be willing to move heaven and earth to protect and avenge his adopted family (note to sassenachs in this thread, the Thatch incident was meant to be an exception to highlight how serious a threat Blackbeard was, not the bloody norm for how Whitebeard deals with shit), to a bloke who only avenges or protects family whenever it is convenient for him.
I fear what Oda is going to do with Shanks and Teach.