Interesting move trying to push snake-oil in a room full of SMEs.
Well, it's not "quite a different specialty" in the same sense that zoology is quite a different specialty from what you would expect at Black Hat. There's some overlap between cryptography and Black Hat.
We have a pretty strong cryptography program going on at Black Hat. I think we might be the best industry offensive crypto conference at this point.
Most bad or boring presentations are not called out publicly on several media.