There is no good reason to pursue a project like this (or if there is, it would be very surprising to me), so it would reek suspiciously of "not invented here".

Because more likely than not, they're going to screw it up, and the choice to use go was not made for sound engineering reasons (go is not the only language this would apply to, but because of the lack of good FFI, its more likely to happen). The exception would be if said person had a solid background in numerical computing and was up-to-date with the state of the field, but that's pretty easy to find out.