Claim: "Getting vaccinated stops a whole class of diseases which might kill you"

Your rebuttal: Although "class" sounds big, in fact there are only a countable number of viruses that vaccines save you from. The number of ways in which you can die is astronomical.

In the above analogy, as in your original statement, you're completely missing the point that the class of errors / class of diseases is an important class and easily preventable, therefore you should do it.

In fact, I think what you've said is the reverse of true. Static typing means that there's a chance of an error at each node in the program's tree because a statically typed and statically compiled language ensures that the program can be rendered as an AST before you ship it to your user.

A dynamically typed interpreted language can have an error at literally any character in the entire thing, and you don't have "compile-time" to tell you it's not an error.

The class of errors that you're saving yourself from is "every single character of this program could be wrong in a way that results in it not even being representable as an AST; there are astronomically many ways that can occur".

In addition, it now goes wrong much later. You have to ensure that you've hit every path with testing before you can be even somewhat confident it's valid code, let alone logically correct and bug-free in other ways. A compiled statically-typed language you waste no more time than a compile-cycle to get that minimal assurance.