Do this in important directories for added safety:
$ touch -- - i
This creates a file called "-i" which will add the interactive flag, prompting you before deleting every file that rm was going to delete.
I'm pretty sure that if the author had put "black" instead of "white," this article wouldn't have even been linked here. It's fashionable to openly express anti-white bigotry these days.
18 hours is absurd, IMO. I have a Garmin Instinct Solar that gets up to 24 days of battery life without any solar exposure (there's unlimited battery life with enough exposure unless you use GPS a lot). I get notifications for any phone app I want, plus GPS when I need it and a multitude of fitness tracking, including round the clock heart beat monitoring. I can't use it as a phone or send texts (though I can read them) so I guess that's where it "lags" behind the Apple Watch. I think it's the perfect fitness tracker that's also a rugged watch.