>wouldn't it be better to use examples that aren't as easy to do with those other tools?

hmm, food for thought...I wasn't thinking along those lines after I had shown/linked powerful one-liners in the very first section: https://learnbyexample.github.io/learn_perl_oneliners/one-li...

I'll see if I can also add such examples in the actual content too. I was concentrating more on explaining the syntax, showing features, etc