Wow. Three big mistakes in two short sentences.
1.Belief in a rapture happening at AD 70 does not equate to Preterism. I am a Preterist, but I do not believe in a rapture. Not as it is presented in much of modern Christianity.
2. Hank Hannegraaf might be partial Preterist. There is a considerable difference between partial and full Preterism, which is what I am. (Although the term "full" is not the best term.)
3. Preterism is not really overwhelmingly popular anywhere, but it is growing. Moreover adherents to Preterism come from a wide variety of backgrounds, certainly including Arminians and Calvinists.
Your opinion is duly noted.