For all of those common OSes, either Python 2 is no longer installed by default or a plan to do that in the near future has been announced. Many of those are preparing no longer to offer Python 2 at all, though few have already dropped it. I don't think RHEL 9, Debian 11, Ubuntu 20.04 LTS, Windows's new Python stub after the EOL date passes, or 1-2 major versions of macOS in the future will offer it.
Yes, OS vendors will temporarily offer some transition past EOL for the versions they ship. But only temporarily, and only in limited form.
Yes, OS vendors will temporarily offer some transition past EOL for the versions they ship. But only temporarily, and only in limited form.