Is it possible to protect users from themselves in every circumstance?
Yes. Remove all of the features from the software. Now, I know you're wondering, "What if my users eat the battery?"
Next, remove the hardware itself. Now users cannot harm themselves at all.
Unfortunately, some users manage to cause themselves harm using nothing but their own body.
Clearly, there should be a way to restrict their access to that too. Keep them from performing unauthorized bodily actions that could result in self-harm. For safety reasons.
"If you are protected by a steel door, but you don't have the key, you aren't safe: You're imprisoned."