I think this is another issue that has been way overblown. The media thrives on controversy so they love to make big issues out of virtually non-existent issues.
And I doubt people are being misdiagnosed with Alzheimer's that actually have CJD. They are commonly misdiagnosed as having Alzheimer's though when it is really just a side effect of their medications.
And yes, from what I recall it is rapidly progressing.
Your symptoms you mentioned are not from carpal tunnel, but they can fit a number of neurological disorders. If all your neurologist can come up with is carpal tunnel then it is time to find a new neurologist.