People aren't taking minor, inconvenient, personal, moral steps to solve these problems because it's obvious that won't do anything to solve the problem. It's irrelevant whether or not I shut the water off when I brush my teeth when the farm over in the desert is subsidized to run a center-pivot irrigation in system in the middle of the desert that pulls 800 gallons per minute. Collective action is required, which means that instead of moralizing we need to fix the incentives. The only incentive that is universal is price.
A few people deciding not to fly or buying produce at a local farmer's market instead of the grocery store because they're concerned about climate change is not a signal that's audible to The System.