for 1) various groups show heart-breaking images of wildlife suffering due to pollution, then work to mobilize the outrage into their solution. for 2), recycling programs should have had metrics, such as lbs of plastic "saved" from the landfill, energy saved from collecting cans, but also the counterpoints such as "tons of CO2 emitted by recycling trucks", and "dollars removed from poor people when local cash-for-cans businesses are shuttered". If the data show they emit more CO2 equivalent than they save, then they should concede that the program has failed. If the program needs a jump-start before it is "ecologically profitable", they should say so and agree to cancel the program if their goals aren't met by X date.

At least where I live, the garbage trucks have split compartments which means there's no additional trucks.

It’s a good thing we have electric motors, then. An additional benefit is that they are much less likely to wake you up when they get your bins at 5am.