Only if the audience is not competent to evaluate them.
I am quite certain that there are indeed cases where the vaccine is factually responsible for a death, and that this cannot be "proven". As a result, and if this was the only source of error, the vaccine would not actually be as safe as it is reported to be.
Let me now address the obvious: why are you not also mentioning the fact that there will be unreported Covid-related deaths. And that there will be cases where a death is erroneously connected to the vaccine?
Surely I am not the only one who recognizes a pattern here: opponents to the vaccine very often ignore many of the dimensions of this issue and selectively focus on those dimensions that endorse their fears about the vaccine.
Pro-vaccination types may do this as well.
Everyone has to play fair - you have to look at all relevant aspects. In this case, you have to address all possible things that might be under-reported.