@Shaveit If you understood science, particularly the process of FDA approval of any agent you would know that there was plenty of science behind it. So ... again, please cite your source of information
where do you get your facts from about killing so many, question how many would have died if they thought like you do. tell us where you got you information and actual figures
If people took a deadly Covid vaccine while there were several properly tested and safe ones available, that's on them. And how many did that anyway? I wouldn't obsess over that.