Presumably the people who opt into the self-destruct option are more concerned with the possibility that they might need to self-destruct and not be able to tha

Presumably the people who opt into the self-destruct option are more concerned with the possibility that they might need to self-destruct and not be able to than of possibility of false alarms. If you've already planned for the possibility of self-destruct, a laptop can be a very transient device. Maybe the only important thing on the laptop is your bitcoin wallet key, but you also have a physical copy stashed in a lockbox somewhere. Maybe you're only using the laptop for its browser, and you've memorized all the passwords you need to enter. Someone snatching the laptop might be doing so to grab the one keyphrase that you logged in with. The actual device is unimportant to you, then.