One thing you don't get in the C/Python combo is total static typing. The other big win of Go is elimination of a lot of runtime errors.
So it comes down to which will be more of a win for you and your product. Go has a big advantage here IMO though because of static typing AND performance increase.
Is that relevant though? The parent is asking about a comparison between python+c and Go for the OP's software, so doesn't it make sense to answer to that?
Of course, you are correct. Rewriting in any other language with static typing or an available compiler implementation would also provide the benefits of static typing and detection of runtime errors.
Because those benefits are not some special feature of Go.
On the other hand I think youth generation of programmers lack exposition to programming languages, like we used to have in the old days, hence they make quite limited comparisons.
So it comes down to which will be more of a win for you and your product. Go has a big advantage here IMO though because of static typing AND performance increase.