He or she is saying that some people who were not looking for the advanced features bought the iPad because it was the only tablet available beyond some minimum.
My mom (she's a minister) just got an iPad, when all she needed was a handheld device with which she can scroll the text of a eulogy, when she's at a grave doing a funeral. The lowliest of tablets can handle this task, but "iPad" is all people talk about. If Amazon can generate buzz -- and I think they can -- then it would certainly erode sales such as my mom's.
