I think this is a questionable statement, as it's like saying that the Internet will not last forever, because it will be surpassed by superior technology.
To me the question is whether side-chain (off-chain) technology can be implemented into Bitcoin, such as Lightning via Segwit.
It's likely there will be more popular and efficient forms of payment than BTC going into the future, but that doesn't change it's store of value.
In one way it reminds me how hardware such as ADSL became upgraded to DSL and now we are going into fibreoptic, but ultimately the Internet has remained the same.