Stop Closing Your iPhoneโs Background Apps.
LOL. As a commenter points out, this article is full of bad advice. My guess is that Gizmodo is being paid by app makers to peddle this sort of propaganda, since apps do run persistently in the background and this does use resources (and does cause issues).
After all, you canโt steal data if the app ainโt running in the background. And on my phone, the battery definitely lasts longer if I shut down all background apps. Since stealinโ data is the entire goal now, of course app makers promulgate bogus crapola like this. Donโt buy into it. All lies.