This is completely wrong. Perl 6 is a much more expressive and logically consistent language than Perl 5.
On the other hand Perl 5 is faster for normal usage, and has mature library support, while perl6 has to catchup a lot.
Perl 5 is only slower with their not-existing/silly object systems (Moose), there Perl 6 is much better.
Many perl5 devs just don't want to learn a new language yet.