yes but active usage doesnt mean it was not used?
If their criteria was "at least 1 person uses it at all, sometimes" then it would not have been removed 🤔
likely no maintenance effort at all.
The maintenance comes less from the code and more from making sure that every single menu added or changed in any way continues to behave correctly in three different sizes with themes and everything.
Nope, not GMail either, even GMail has ads now.