Seems to me that you, along with some others, are getting a tad overheated. He goes on to say "The idea that Alzheimer’s might be Type 3 diabetes has been around since 2005, but the connection between poor diet and Alzheimer’s is becoming more convincing". A perfectly reasonable statement.
This is a short opinion piece which will alert those interested to look further. If this is not to your liking then check out this one:
which has plenty of references. May be right, may be wrong but it's an interesting idea.