Just to be sure, are you complaining about the work done by the solo developer of a patching tool for a collection of old games distributed for free and thanklessly maintained for years because you dislike the language they chose for their own work which I repeat they are providing for free?

Be sure, I'm not complaining about anything here.

Tho initially all those years back IIRC I wanted to tinker with how it installs mods for the Linux native "enhanced" editions. Otherwise I wouldn't even know what it's written in.

The number of people willing to brave hacking in Perl seems to have fallen off a cliff - for good reason - so it’s a weird choice of example.

If falling out of fashion is that good reason then yeah. At least it's not a highbrow esoteric language thingy that next to no-one in the wild used to begin with.

I've personally fixed an early noughties Perl script where one of the modules it used had changed its name (but thankfully not the interface, not significantly at least), among a couple of other compat problems. Fixing it turned out pretty straightforward even for someone who's far from a greybeard Perl "hacker".

Perl didn't just fall out of fashion. It failed as a language because it wasn't able to keep up with what other languages could do in practice. The people behind Perl recognized that, but weren't able to agree on a solution. So usage of the language collapsed.

A big part of the problem wasn't that you couldn't write good code with Perl, but that there were too many ways to write bad code with it. That made it anathema for any sort of corporate development, which is the main driver of programming language progress.