Python 2.7 will not be maintained by PSF soon anyways.
Unless you see some big corporate support contracts coming over the horizon for PSF, not to mention they'd have to be worth the money vs the technical debt, I don't think Py2 support will get extended.
There's less muscle behind keeping Python 2, but there's a lot less muscle needed to keep it going than to extend copyright.
1 week is not enough
1 month is not enough
1 year is not enough
5 years is not enough
10 years is not enough
20 years is not enough...
Do you really have Python projects that can't be migrated in 3 years?
At some point the line has to be drawn to move everyone forward. Extending the EOL for the last long-term of 2.7.x by 5 additional years is pretty generous.