Yes, but keeping the old Apple hardware alive was not the point of the article. The point was to try to run MacOS on non Apple hardware.
That line was in reference to how long Apple would be supporting MacOS on Intel, which for the Hackintosh community, also means how long they can continue to build Macs with off the shelf parts.
These people don’t care about the Apple hardware. They like MacOS and want hardware that they can upgrade and tweak.