I would have thought this is just because Java forces you to catch most exceptions. It's only the RuntimeException subclasses (which includes NullPointerException) that are unchecked. And a good deal of those are quite obscure. I really wouldn't expect to see many occurrences of FileSystemAlreadyExistsException or MalformedParameterizedTypeException.
There are also the Error classes (including OutOfMemoryError) that wouldn't automatically be caught, but there aren't many likely candidates there either.
Very useful info, if it's accurate. Mostly nullPtr exceptions, signs of sloppy programming. One pitfall IMO of Android is how easy it is to push apps to the market.
Oh totally agree, I just think more care could be taken since these are obvious issues, and have been for relative ages now. I just hate how easy it is to slap together an apk and throw it on the market, though Play Store's vastness is nice for the keen users.