except when they can't (I saw comments of users that lost the access to their accounts or that could not prove they bought the item because they lost the receipt that had their devices turned into very expensive bricks)

OTOH e-waste should not be allowed under any circumstances when the raw materials are scarce and/or retrieving them is damaging to the environment or they are polluting.

Last but not least the device destiny should be under the control of the person in possess of the item, unless the item was stolen.

If someone brings their car to my junkyard to destroy it and I fix it and resell it or dismantle it and sell it as spare parts it's completely under my rights, I don't see why electronic devices should work differently and why the manufacturer should have the keys.

Don't let me start on non-Apple compatible replacements parts that Apple won't let you use, even if the warranty has expired.