If they had done an activity check they would have seen that half of all projects have zero maintainers.
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It is true of Solitaire, Minesweeper, Calculator, and Notepad, and probably about the same number of programs on other OSes. (Notepad has recently had an important expansion of functionality, but it didn't NEED that change.)
It's also true of some dinosaurs I have on my system, that copy DVDs and so forth.
It's not true of most other applications, nor can it be true, unless the app works in a sealed, unchanging environment.
Even then... Voyager 2 recently required a software upgrade, IIRC.
You are but going to fundamentally be in distress if solitaire and minesweeper is not running, if your monitoring SW for some important infrastructure starts to exhibit some issues, you might want to take a look or two...