Saying it COULD happen within the next three years, is not the same as saying it WILL.
I understood Veith as saying that for the most, too.
Though I'm kind of wondering why did you extract that statement without leaving it in context with the very next sentence that followed it, explaining that the timing was in God's hands, we don't know the when, we just know it will and we need to be prepared watching and praying.
And Veith said in many of his videos referring to such time the same as you did: Not definite, but COULD happen, is interesting.
I just think some are criticizing Veith for that much in the same way as some are criticizing Vine.