I think that's part of the problem--there are too many post-hoc justifications for why things happened the way they did that ignore what actually happened and why people made the decisions they did.

Dan's Parrot postmortem is still accurate: there just wasn't the will to turn P6 into a real, stable, shipping product, and there wasn't the honest acknowledgement that P6 wouldn't be a realistic replacement for Perl until far too late.