So this is an implicit attempt to push me into "overachiever mode". By "overachiever mode" I means conversion of the code using all those fancy idioms available in Perl 5.22 and above and advocated by chromatic, especially unhealthy fascination with OO (inspired by the desire to complete with Python) which I consider counterproductive. When I see bless statement in simple scripts I suspect fraud.

I don't get anything out of it if you read it or don't, but it's a shame that you might give other people the impression that the book tries to do something it was never intended to do. For example, you won't see anything in the book about using:

• Smartmatch (except "don't use this")
• Postfix-dereferencing (because it wasn't explicitly marked as stable for the version supported in 4e)
• Subroutine signatures (again stability)

The book has always been freely available online, in all of its versions. I'm disappointed that you'd write this without having at least skimmed the book for yourself to see if it's true. (It's not.)