Batman and Robin is pretty much the worst portrayal of villians; even dumber and more awfully campy than the '60s show. Every Batman fan absolutely hates the Bane in that movie. It's absolutely nothing like his original introduction.
Also, what are you smoking? He was perfectly fine in the '90s series if you actually watched it. Even I got that, and I was like 8 or something when I watched it/read the comics.
Not even a mildly casual Batman fan would think Bane is dumb.