I'm not trying to address the general point of the post. Just a couple of comments.
I keep my payment card in aluminium foil because turning off NFC payments don't stop skimmers from making a full copy remotely before making a regular purchase.
If you don't plan on doing contactless payments, you can just cut the antenna on your card. Depending on the material, you can see the traces by shining a powerful enough flashlight from its back.
Even if someone gains access, there should be limits to what an administrator can do remotely, so that hackers cannot cover their tracks [...]
That reminds me of this article
. That whole blog is quite entertaining.