Many of the "prophecies" in Scripture were written so that those in the events depicted would not recognize the fulfillment until after the fact. However, the resemblance to the prophecy was meant to edify the believer and help convince the unbeliever.
I have not studing the results in Hebrew directly. I have written some code to attempt to find similar effects in English texts and found none. It could be that Hebrew is structured such that chance occurrences are more likely. However, the "experts" who have examined this phenomenon have compared results with other Hebrew texts and not been able to locate similar effects in non-Biblical texts.
I don't know what to believe about it, but it does produce some startling results. Go look at the site!
Remember that the Dead Sea Scrolls demonstrated that the current Hebrew texts are EXTREMELY faithful to the originals. Else, this whole train of thinking would indeed be specious.
Part of the problem is imagining what might happen before it happens. One has to have a clear notion of what to search for.