Apple was talking about batching tasks for battery life back when they shipped Grand Central Dispatch back in 2009. It was a major part of that year's WWDC keynote. Race to Zero was also a major part of how they designed networking for iOS.
Peer pressure. When everybody else does it and you don't, your app sticks out like a sore thumb and makes users unhappy.
The other aspect of it is that paid software is more prevalent in macOS land, and the prices are generally higher than on Windows. But the flip side of that is that user feedback is taken more seriously.
But when Apple says it, software devs actually listen.