The original question was about the "Freezing the Spec" and not accusing chromatic of something bad. Chromatic is a great guy!
But how many projects have you worked on where the spec evolves towards infinity without a stop? What happens to such projects? Isn't it wise to avoid a second system affect which Perl 6 seems to be experiencing.
You can't make systems without making mistakes, and if you avoid making mistakes you will never build a big system!