Fedora ponders the Python 2 end game

How can Perl 6 be worse when it's quite possible to do a piecemeal upgrade of a codebase from Perl 5 to Perl 6? If such a change is even desired instead of just combining the best parts of both languages. No Perl 5 developer was left in the rain and those who want, can use Perl 6. What about this was in any way worse than leaving people who cannot upgrade behind and forcing countless pointless man years of effort for the rest including distributions?