Sawyer gave two practically unrelated talks and you both are mixing them up.

One about Perl 7 and one about what he wants to call "Standard Perl" a subset with BNF language definition, hence statically parsable by tools like Guacamole.

He was clear about that "Standard Perl" is not related to "Perl 7"

> If bareword filehandles no longer exist in Perl 7, how do you refer to STDOUT, or more commonly, STDERR, as in print STDERR "oops: ..."? Or, for that matter, STDIN, as in <STDIN>?

They are excepted, kind of built-ins.

I recommend watching those talks on YouTube before speculating and spreading rumors.

And the user you are responding to is pretty unknown here and had only 2 posts so far, so I'd be really careful to rely on such sources.