I only know Taylor Swift is a singer (country?) and I know Kanye is a singer (rapper?), who lost his mother a year or so ago. But, what an asshole he is.

I can't think of any excuse for such an outburst but the only reason I conclude is "sour grapes" for him to make such a fool out of himself. Evidently, I hear Taylor got a standing ovation and what a class act Beyonce was too. They both will get great press while Mr. West will be trying to dig himself out for some time.
TIS