That's how Apple does it. Ubuntu LTS, Debian Stable, CoreOS/Redhat, etc, are useful because the old versions of the software are maintained. Though Windows has not traditionally bundled GNU or Open Source packages, it is also built with a strong commitment to long term maintenance: consider Notepad,MSPaint, and .NET.
Microsoft is including Python 3.7 which has planned support until at least 2023 and possibly 2026 https://www.python.org/dev/peps/pep-0537/#lifespan
Also, as the post sort of points out, this is being built by the Python community itself (rather than by Microsoft directly; contrasting with the distro model), using mostly the same CI/build infrastructure they already use for the builds at python.org and presumably may be as up to date as the Python team wishes it to be.