Obviously, this has the vulnerability that you can take a picture of a computer monitor with it, showing whatever you want to.
Apple could really make an interesting product here where they combine the LIDAR data with the camera data, cryptographically sign it, and attest to it as unmodified straight from the camera. Can it still be faked? Yes, but it's much harder to do.
Security has to be the #1 priority in computing, unlike your house which probably doesn't need to be fortified like a prison. The reason is that unlike your house, a computer system is exposed to 8 billion people at all times, and maybe 7 billion of them will face no consequences if they break in and steal your stuff.
Apple could really make an interesting product here where they combine the LIDAR data with the camera data, cryptographically sign it, and attest to it as unmodified straight from the camera. Can it still be faked? Yes, but it's much harder to do.