What the.... where the heck do you get this idea?
You flame something based on your delusional hearing?
He's saying "Hey! Hey! Ningen Suck it! Ah Ningen FuXX it!" (Ningen means humans)
The previous slower part is "Hey Hey! Ningen Sanka Ainige Ningen Fuan ka?"
(Hey Hey! humanity praising, running from love, are you humans insecure?)
I know it's almost impossible to understand or even hear their weird lyrics, such is a nature of new generation metal and pop culture, but jumping to strange conclusions without any concrete evidence is totally out of whack.
Hell, I even read on youtube where a guy who thought they were saying "white people", when what they said was "What's up People!?"
which by the way, happens to be the title of the song.
"WTF" indeed. People these days are way too paranoid.
I guess the lyrics hit it right on the nails. Humans these days
ARE insecure.