A week is not "long term storage". Apple means when you are going to store the devices for months.
It's not good to store modern batteries at full charge for long periods of time (and switching off a fully-charged device would prolong this) and it's extremely bad for battery health if they are allowed to completely discharge. (not being used for months)
Whether it's a few days or even a couple of weeks, there's no harm in leaving the device sleeping, rather than switching it off.
What's good for modern batteries is constant use. Lots of charge and partial discharge cycles, not full charge/full discharge, or switching the device off while fully charged.
And I don't appreciate comments like this, claiming that I am "ridiculous" and "ignorant".
If it makes you feel better, by all means switch it off every night. But that's no reason to insult people who don't, and it's not going to do anything to improve battery longevity.
Sorry, but when 95% of the poll disagrees with someone and they stick to their practices and doing it because they've always done it, despite being advised about new technology and practices by people who know, that's stubborn. No hard feelings toward anyone, but it is what it is.
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