not having root access means that the user doesn't have complete control over the device's operating system and its underlying features. This limitation can pot

not having root access means that the user doesn't have complete control over the device's operating system and its underlying features. This limitation can potentially compromise the security of end-to-end encryption because the companies controlling the device could theoretically have the ability to intercept or alter the data before it's encrypted or after it's decrypted. So, the parent is probably suggesting that without root access, and thus full control over the device, the promise of end-to-end encryption is somewhat of a "fantasy" because the user can't guarantee that the device itself isn't compromising the encryption in some way.