You are reading rubbish.
What the public don't realise is that when a new medication is announced, it has to go through various tests B4 NICE get hold of it. Also, these vaccines have been developed by many Companies over the World who have dropped their egos.
Usually a lot of time, energy and money is put into researching drugs. Years sometimes as recipes are altered to meet the current requirements.
In the case of C-19 the World got together. There was no need for any of them to sell to the highest bidder, which is what often holds up medications getting into the UK market. If the UK won't pay the going price medications are sold to other countries which makes it seem as though they have taken a while to be declared safe for use.
These vaccines are essential to save Lifes. Some were already in the pipe line as it was known that there was another Pandemic on it's way. So they were 'made', more or less but required tweaking in order to be suitable for C-19. Which means that as variants occur, vaccines can be again tweaked against each mutation.
Also, how long do you know that vaccines are generally trialled for? Years, months, weeks? I have no idea nor am I interested, I leave that to NICE even though I don't always agree to what they allow into the market. It's in the main stream News all the while which makes it seem as medication has 'suddenly' appeared, where in fact scientists are looking for appropriate medications across the board all the while. It's often a race to get the Patents out there too, whereas with these vaccines, the recipes have been shared.
I'm a real sceptic but I didn't hesitate.