Nah:
1) Like someone mentioned, it's Obito. Not the brightest bulb.
2) Could've just been cocky and consumed with his need for VENGEANCE. I mean Madara had done a headscrew on him by that point. Mental state was probably like "Motherfuckers, I got me some senjuice and a mangekyo, AIN'T NOBODY GONNA HOLD ME DOW--
Then he gets blasted by a Rasengan.
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