This is an immutable, self-evident, mathematical truth. Two technologies fulfilling the same purpose usually do not coexist for very long, in historical terms. The old way dies, naturally, as the new grows to take it's place.
Bitcoin is on the right side of the chart. The surviving side. Fiat money is not. That's the big picture, folks.
if this were true then we would all need to escape Bitcoin and fall over to Litecoin as Litecoin is the newer of crypto compared to Bitcoin?
LTC doesn't provide any significant new technology above BTC.
It's just something like a Chinese copy of bitcoin. Just like there are hundreds of fiat currencies. But bitcoin is significant other than fiat currencies.