There's a lot to unpack in that comment, but for the sake of brevity I'll simply say there is no logical reason to expect a new technology to come around and bail us out right as the old technology is reaching its limits.

PS: The COVID vaccines we are using now were developed before a single American had even died of COVID. The technology was already there, the issue was simply all the regulations in the way. Operation Warp Speed didn't develop a new technology, it just cut all the red tape to cut the licensing time down from 10 years to 1 and obviously funded the construction of new production facilities to allow the process to be scaled up rapidly.