I don't get it. What does this have to do with Perl, other than the first 4 letters? It seems as if it is suggesting Perl is pilfering from other languages, or vice-versa. In my observation, there are certain tasks that we require computers to do, and each language has it's own implementation. When someone releases a hash library for C, does that mean he pilfered the idea from Perl? No. Hashes are a desirable data structure. and each language will find a way to implement it, independent of other languages.
It makes me think of the horrible idea of software patents.
I suppose something like Python's use of whitespace and indentation (yuck) could be something different and unique, but I wouldn't want Perl to perloin that idea.