Earlier quoted context omitted.
Yes, it really gets old the constant hyping of Australian fauna as 'dangerous', mostly it seems by US American media. Cassowaries in the wild are really not a danger to humans even though they have the potential to do possibly lethal harm. The cassowary is only going to act to defend itself; it's not a predator (unlike salties).
Do you think it's unfair to classify it as the most dangerous bird? What other would qualify?
If you mean 'potentially dangerous if encountered', then I guess it would be. When it comes to birds that might slice your abdomen open, it's in a class of its own.
If you mean 'actually dangerous in terms of causing injuries or deaths', you could say most. But the baseline for death-by-bird is so low that the word 'dangerous' seems a bit daft (Cassowaries exist in decreasing numbers in areas of relatively low human populations, are infrequently encountered and not usually aggressive). On the numbers, if Cassowaries are 'dangerous', then dogs, horses and cattle are all catastrophically homicidal.