It's rubbish. For starters, most vaccines are in development using tried and trusted techniques - they are far from novel or untried as he claims. The reason so many trials could get going so fast is because they built on existing foundations. To develop something from scratch takes much longer.
But yes, scientists will need to look at how vaccines are refined and improved upon for he future. They have been doing that ever since Jenner discovered how to use cowpox! This is not a new phenomenon, and our first flu vaccines had a long way to go before they became what we have now.
I would be reticent about believing anyone who thinks that they purpose of the vaccine is to "turn off the virus" - not one of the current vaccines in development will do that; very few vaccines can do that. "Turning something off" is a very hard thing to do in medical terms. But there is some very early preliminary research that has suggested a possible route to "turning off the virus", but it is a very, very long way off happening, if it ever does.
For anyone interested, that latter bit refers to the fact that scientists have discovered a "pocket" in the virus which could, in simple terms, be stuffed full of something that totally demolishes the virus. But they don't know what would do that, or how to get it in the pocket. But apart from that, it's a goer!