Houses and cars are 1000% not secure, you can always break a window and get access. That's why they have ARMORED cars and bank VAULTS or safes.
However, if you break a window, or drill a hole in a safe, there is "visible sign of forced entry".
https://en.wikipedia.org/wiki/Forcible_entry
When you see a broken window by your front door, when you see a broken window on your car, when you see a hole cut through sheetrock next to your door, or you see your door blasted off it's hinges, you know that the security of the device has been compromised.
That's truly what's missing on device security nowadays: "Signs of Forced Entry" ... number of incorrect password attempts, number of incorrect FaceID / TouchID attempts, etc.
And if your device is rooted or untrusted, then there's often not a good, trusted, visible way to see that security has been actually compromised (as opposed to attempted to be compromised).