Programming

And Perl both still exists and is actively maintained, so it “lost prominence” rather than “died”.

Okay, but you're the one who called out "the demise of Perl". Have you changed your mind? I was just responding to your question.

For what it's worth, I think you were right about that: Perl is dead, in the sense of no longer growing or even maintaining the reach it once had. Other languages are overwhelmingly chosen for new code, while Perl has mostly fallen into disuse outside of people who learned it in its heyday and haven't moved on, and irrelevance outside of legacy systems. It might not be quite as much a dead language as Latin (which also still exists and sees some use) but it's well on its way there.