I would never watch a video that supports KJV only.
The KJV was translated from 7 very late manuscripts, filled with errors. A simple knowledge of Greek results in finding errors in almost every sentence.
The fact is, the grammar pretends to be word for word, which NO Bible can be, as Greek syntax is radically different than English sentence structure and grammar. The result is that not only does it not follow English well, it doesn't follow the Greek well, either. It has a huge amount of obscure and archaic words. We do not have 2nd person singular, and I won't read a bible that has grammar that I do not understand.
I just finished 2nd year seminary Greek, and our prof, who is on the translation committees of the ESV and NIV, had nothing good to say about using KJV today. A good translation must be readable in the vernacular. Early Modern English is not the language I speak. I have used NASB, ESV, NIV, and HCSB. I've also read paraphrases like the Message and NLT. I am trying to get the NET Bible with complete commentary notes, as my next. I also have read most of the NT in Greek, ad
KJV has its historical purposes. Quite simply, you have been duped and brainwashed by this video. Trying reading James White's book on the KJV only controversy. You obviously need to hear the other side of this debate!