GrouchyGrape
Strictly speaking, even a smartphone itself isn't needed for survival...
The simple fact you don't need an app or a feature to work as intended, doesn't mean that it isn't important for someone else. I, for one, must use Gmail because I need to postpone emails many times a day, and the integration with Tasks too.
Does it mean this bug severely hinders my workflow? Yes.
Does it mean I cannot live without a properly functioning Gmail in Grapheneos? No.