I love that video, I really got a kick out of it. I think anyone who watches it should know that the crazy guy who doesn't let the others talk, is full of himself and knows nothing about the scriptures. He didn't let them talk because he was trying to show off in front of his friends and definitely didn't want to risk the missionaries saying anything that might make him look foolish. The missionaries are taught not to argue with people as you see they kept their composure while the man babbled on about scriptures he grossly misinterprets.
Arguing gets no where and contention drives the spirit away, which is why the missionaries left. Because that guy wasn't about discussion. He had his friends videotape the thing so he could trap the missionaries and insult them. I also think it is interesting that the man himself fulfilled a prophecy spoken of in the Book of Mormon in the book of Nephi chapter 28 where the Lord is warning people of the latter days which states,"There shall come many in that day which shall say"A Bible, A Bible, we have got a bible, we need no more bible and there cannot be any more Bible. thou fool that shall say this, Ye shalt have a Bible, and what thanks do ye give for what ye have received, Do ye remember the pains of the Jews, in bringing forth salvation unto the gentiles, yea, what do the Gentiles mean? Have they thanked the Jews for the bible which they have gotten from them, Nay, but ye have cursed them and hated them, and they have become a hiss and a byword among them.
thou fool that shall say a bible, we have got a bible, and we need no more bible. know ye not the I the Lord speak unto the Jews and they shall write, and I shall speak unto the nephites and they shall write and I shall speak unto the lost tribes of israel and they shall write. Know ye not that the testimony of two nations is proof that I am God? therefore ye need not suppose that I have not caused more to be written. For I am the same yesterday today and forever and my words cease not.
I know I paraphrased a little but that is mostly the point of that chapter. I didn't have my book in front of me but that is my memory. You will see all those phrases in there.