What's the problem? The problem is telling people that God hasn't really done the things He has done. How can we fall on our knees in appreciative awe and praise the Lord when we deny the marvelous and mighty works He has accomplished?
Look, for instance, at
this article by the same author. He uses II Tim. 3 - where Paul instructs Timothy to avoid certain people - to tell us these people are just now arriving!
Do you think Paul would tell Timothy to "turn away" from people who weren't going to show up for 2000 years?? Well neither do I. Clearly the "last days" of 2 Tim. 3 happened within Timothy's lifetime. Any other explanation makes calls Paul a nut and the Holy Spirit a liar.
(When the author was confronted with his error, he spouted this nonsense: "It is always the last days, since we all die." Can you believe that?)
It's the same with his twisting of Zech. 12. If there was any remaining confusion - after reading it - as to what Zechariah's prophecy was about, John 19:37 clears things up.
Isn't God due our praise for all the mighty works He has accomplished? But who can offer Him that praise when some false teacher has convinced us that He hasn't even done them?
The Bible record of His great promises and prophecies, and of their fulfillment, gives us solid ground for our hope. To deny the fulfillment of those promises and prophecies is to undermine our hope. What would you call someone who undermines our hope by teaching that God hasn't done what He has done?
I'm not bold or foolish enough to argue against Jehovah of Hosts, and I don't think you are either. But some are. Frankly, I tremble at the thought.