It's not a threat unless people stop buying iPads. How you do you get from "interest in the Fire" to "lack of interest in the iPad"?
They don't compete on price. They're not really even the same class of device. This is just another pointless and content-free "ZOMG <foo> KILLER IS ON THE WAY!!1" article.
"The more interesting stat, perhaps, is that more than a quarter of respondents in ChangeWave’s survey who confirmed an imminent Kindle Fire purchase said they would buy the Amazon tablet in place of an iPad."
The correlation between the intentions of respondents in this survey and the general tablet-buying public is not clear, as is the case with any survey, but in this context the Kindle Fire is clearly a threat to the iPad. 26% - that's a huge threat.
Everyone just wants to be on the winning team now and be able to call the others losers. It's kind of the way things are now. iPhone vs Android. XBox vs Playstation. Coke vs Pepsi. Etc etc etc.
They don't compete on price. They're not really even the same class of device. This is just another pointless and content-free "ZOMG <foo> KILLER IS ON THE WAY!!1" article.