No, my claim is that, while ceasing development of the language Python 2 is wholly sensible, ceasing development of the implementation Python 2 (CPython specifically) is not (due the almost certain existence of latent bugs). My "mumble" at the end was meant exactly in reference to that.

I suppose one could argue that, the CPython implementation is the language specification. (And I seem to recall hearing that notion somewhere years ago.) In which case, it would not be possible to freeze development of the language without freezing the implementation as well. There are various reasons I wholeheartedly disagree with such a characterization, but I guess there's some self-consistency there at least.