This seems to be the conclusion that most computer scientists come to when discussing quantum computing.  I always laugh when experts think they can make predictions about technology advancements.  I know that quantum computing is being worked on and will be a real thing far sooner than the experts predict.  I also know that a lot of people are going to be reactive instead of proactive when it happens.  This is why "smart people" are dangerous and shouldn't look for reasons to put off necessary development.