Fully agreed on the screens part. I've gone back to ditching the screen at night. Previously I'd want to read an electronic book, but would end up distracted with everything else. The upside to ditching the electronic screen is focus and general avoidance of the light prior to bed. While RedShift/NightLight modes are nice, I still notice a profound difference by dumping the phone an hour or so before I turn it in.
I think the other component we'll see questioned more and more over the coming years is the general questioning around homeostasis. I recently finished Scott Carney's: "What Doesn’t Kill Us: How Freezing Water, Extreme Altitude and Environmental Conditioning Will Renew Our Lost Evolutionary Strength" and it was a great read. While the main premise of the book is Scott's initial mission to debunk the Wim Hof Method he delves into a lot of newer research and training that is centered around building up our bodies beyond traditional exercise.
Recently I read through comments on HN when the Bay area hit record highs and how people were cautioning of all of the bad things that would happen if one didn't seek A/C. It really hit home how many people are not acclimated, at all, to any level of extreme that other portions of the planet and people deal with on a daily basis. Just as we're sedentary, we're also not as capable to environmental adaptation - and I'll speculate this isn't good for us long term either. I've moved to 5+ minutes per shower of full cold and stopped using A/C in my vehicle, and more sparingly in my home. If you've never done the cold showers as a test to see what you're body is truly capable of - do it. It's amazing how you adapt in a short period of time. Also the clarity and anxiety reduction it brings to either the start or the end of the day is an understatement. Try it, it's cheap and takes no additional time out of your day if you're already showering anyway.