Why don't people ever consult a linguist before they make linguistic claims? It's absurd to say that no single word will survive in 1000 years. If we judge based on our current data, many words will survive, just as "quid pro quo," survives. And if you allow for spelling variations (which are pretty trivial in a linguistic sense), then words from Old English are still in common usage a thousand years later.
Now, if you said "no single language will survive," you might be on slightly firmer ground, although I'll still scoff. If you define "survive" as "not undergo change," then no single language will survive the night.
I know most people don't realize there actually is a science of linguistics. Still. A claim like that casts into doubt a lot of the rest of it, for me, because I know I'm not equipped to find similar errors in the biology or cosmology bits.