Isn't that exactly why they should not give a prize for mRNA vaccines. The Norwegian Nobel Committee (the people who hand out the peace prize) has a history of handing out the prize too early (Obama, Arafat, etc) while the Swedish Research Council are much more cautious when handing out prizes.
I am sure people said the same for lobotomy back when Moniz won the prize. I am personally all for the mRNA vaccines and am vaccinated with Pfizer myself but I understand why they are cautious when handing out prizes. What harm is there in waiting a few years?