What I meant was that the general population can't use those vaccines anyway, unless they do the synthesis on their own or get into a clinical trial, so it's di

What I meant was that the general population can't use those vaccines anyway, unless they do the synthesis on their own or get into a clinical trial, so it's disingenuous to talk about them in the context of public safety. Making a claim about the safety of pre-approval vaccines is misleading because it's claiming one uncontroversial true thing ("some vaccines in development are found to be net negative in trials and do not progress further") that sounds superficially similar to a scary untrue thing ("getting vaccinated by your doctor with an approved vaccine may be net negative across the population") and hoping everyone else will confuse the two. In this case "some vaccines are bad" was clearly intended to be an ambiguous statement, otherwise it would have been more detailed about which exact vaccines were bad.