I think the decline of the Greens is symptomatic of the new age where Everyone has to have An Opinion on Everything.
As though life is a mere sequence of experiments where we assay each other with tests. Very similar to how we (well, some of us) used to test for oxygen. Or CO2. Does it relight a glowing splint ? Does it create a precipitation when passed through lime water and so on.
The more humanity can be fractured, the easier it is to prevent coalescence.
As forever and always, to whose end ?