You quote a sentence in isolation, which is part of that paragraph and takes it out of context.
As part of the whole context it's also a contradiction.
What is the least of your problems? The fact that they can do anything, or the fact that they need physical access (in which case they do nothing)?
It is clearly obvious, if they have access to your system your stuffed, so that exploit is secondary to the damage/theft, etc. etc. they can do what they like. As I said "essentially they own the system."