Yeah, but searching for the actual word is much easier than searching the acronym. Take MAC for example (tried out with german google, so your experience may vary).
I get a cosmetics site, apple.com and store.apple.com, wikipedia article about the mac adress and a clothing site. Message Authentication Code is nowhere to be found.
Yes, I took one of the harder ones, AES is on the first position, but still it is nice to know the words behind an acronym.
But if they still get bugfixes there will be even less incentive to switch for them.
And if I look at the whole thing now, "no new features" is not certain. If people are still unwilling to switch he may consider backpedaling and backport some other features to 2.X.
If the Python core developers care so much about practical usage they should never have released python3 with features that break backwards compatibility.
Your argument is right, but they should have thought about that before fracturing the python community.
It is not un-replacable in itself, I'd imagine it is just a huge undertaking and many higher ups are afraid to do it and risk something going wrong.