I indeed switch to airplane mode when flying. I guess that's better than switching on the device mid-flight (or worse: when landing..) with all radios blazing.

I too switch devices off or use their standby-modes when not in use. Unless unplugging or an actual disconnecting switch from mains it still leaves a fire hazard, but they've got the energy waste pretty good under control. I'm not going to unplug my tv or pull chargers to try to save <<1W, when I'm going to use them on daily basis anyway.

Still, it's nice to see Jolla booting quickly, but it doesn't beat my (Kubuntu) pc with ssd just yet. There's room for improvement