You're right.
Their beer is horrid, there "chocolate" (Hersheys) tastes like it was made entirely from chemicals and always makes me think of that shit on friends. Mockolate.
I would agree with you if you drank Budweiser, Miller Lite, Coors Lite and all that other cheap watery shit that your average Redneck chucks down his throat.
However, America has an extremely large number of Micro Breweries, chucking out some really palatable ales. Bells Brewery from Michigan and Breckenridge from Denver being two in particular.
So don't generalise when you don't know what you're talking about