Key word "ever" So yes we will see it lower than $1000. It could be when the sun engulfs the earth in 5 billion years.
Lol, I don't think we need to take it quite so literally. If we look at the next few years I don't think theres much chance to see it drop that far.
It has happened earlier, and therefore the chances of it repeating can't be ruled out. During 2013 to 2016, the exchange rates dropped from a peak of $1,230 to around $200 per coin, which corresponds to a decrease of almost 85%. So it has happened previously. It is possible for BTC to drop from $3,000 to sub-1,000 levels.