> If you know Ruby, there is essentially zero reason to learn Perl.

I don't think I ever thought about it but I think I have implicitly taken this to heart since I last was using Perl seriously. Almost every engineering org I've worked for in the last decade has had Ruby as a part of its stack for e.g. scripting or lambdas and it's what I reach for when I need to script something. And I've done Rails work in a few orgs too, which has few parallels in its niche even without considering Perl.

Although I suspect for most people Python is where they land if we're just talking about scripting or hacking something together...or anything (I hate it but it is what it is lol).