I tried to learn perl a few times early in my career, we still had some old perl internal sites and a bit of tooling written in it. I really struggled to find good resources on the web at the time, and most of the perl I was exposed to was so badly written as to be incomprehensible to me. I knew C and Python at the time.
I wonder how common my experience was and why the next gen (at the time) I was part of never learned it