The language influences whether I can easily hack the utility or not.
The language influences how easy the utility is to port.
The language influences how easy the utility is to use as a lib, integrate with some other project.
The language influences how many memory bugs the utility might have (e.g. C vs Rust).
The language influences how fast a utility is to build (e.g. Go build times).
The language influences how easy a utility is to deploy, or to have many different versions of (e.g. static builds vs a mess of classpaths and virtualenvs and the like).
The language influences how easy is to install (e.g. go get/install, or cargo equivalent vs messing with languages with no package managers like C, where new or obscure projects are almost never in the official distro repos).
The language influences how easy is to build (e.g. go build vs the C/C++ autoconf/automake clusterfuck and dependencies libraries hunt).
The language also influences how performant a utility will be (e.g. csv query/processing tools written in Python vs xsv -- or the canonical example, Electron monstrocities vs native tools).
Not all of these traits are guaranteed given a language (to preempt the first knee-jerk objection), e.g. a Python tool could be faster than a Go tool if written well enough.
But historically and statistically speaking, and in a regression to the mean sort of way for each language platform, I've found those things to work better in some language X over another Y.
Hence, for me, the language matters.
