FDA Vaccine Approval

 If you do a search on twitter for unapproved vaccine you will find loads of people saying some version of

A: I will not take an unapproved vaccine

The FDA explains why and how it uses Emergency Use Exemptions for Vaccines here

What will they do when the vaccine gets full FDA approval? 

I can imagine three responses.

1. Then I will be reassured and take it

2. That will increase my chances of taking it but I am concerned still about B,C,D...

3. No I am concerned about B,C,D...

3 is strange as if B,C,D are actually your worries then why say full FDA approval is your worry initially? I have asked a few people who expressed A what they will do after full approval. Not one of them has said 1 or 2 only some version of 3. That looks more like they are using FDA approval as an excuse rather than an actual real criteria they believe.