I think you forgot to mention if the hard drive is encrypted than your statement is true ( in the case for example bitlocker...) but if thats not the case then anyone can just force permissions for that drive and read and write anything.
Bitlokcer would be default active on new windows 11 devices if they all had tpm 2.0 chips ( most of the windows 10 users dont have that featzre ) so bitlocker is out of that case.