Nope. It has been explained several times that 5-10 years wasn't needed because that's how long the actual testing took. It was partly due to funding issues, partly due to administrative issues, etc. E.g. the review process has been accelerated for COVID through two measures:
- phase 1 & 2 could be done at once. Which increased risks for only those who participated in phase 2, obviously
- phase 3 was evaluated with a rolling review. I.e. the manufacturers didn't wait until phase 3 was over and submit their data then, but did it so continuously. And also FDA & EMA started to process those right away.
Then there is also the fact that when you don't have a pandemic (or even an epidemic) then it's hard to do a phase 3, because it will take a lot of time for enough people to get infected. Part of the reason the SARS1 vaccine was never finished (have never earned an authorization) is that it was over by the time the phase 3 would (or did) start. The same thing slowed down the ebola vaccine. The candidate was ready but then the outbreak vanished, so there was nowhere to do a phase 3.
Then there is also the fact that when you don't have a pandemic (or even an epidemic) then it's hard to do a phase 3, because it will take a lot of time for enough people to get infected. Part of the reason the SARS1 vaccine was never finished (have never earned an authorization) is that it was over by the time the phase 3 would (or did) start. The same thing slowed down the ebola vaccine. The candidate was ready but then the outbreak vanished, so there was nowhere to do a phase 3.