By common definition of threads,
In C yes. How about Erlang? Or Haskell? Or Java? Or.... Why should Perl alone have to have to copy C?
iThreads are not simple Kernel threads. They could not be so in an interpreted language with fat variables.
But neither are they new processes--forks defining characteristic--so any allusion to that is simplistic, inaccurate and deliberately misleading.
You might wanna get off of those coat-tails....
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.