Yes but at the same time not enough people truly believed scientists when they said it was critical, so maybe people won't quite believe the "point of no return

Yes but at the same time not enough people truly believed scientists when they said it was critical, so maybe people won't quite believe the "point of no return" aspect either, and will just react from the remorse of having fucked up the ecosystem. I'm not advocating that approach (yet) but just want to point that it's not a guaranteed failure.