No it's not. Bitlocker, etc are full disk encryption methods. They are trying to prevent someone from accessing your data in the event someone has it physically

No it's not. Bitlocker, etc are full disk encryption methods. They are trying to prevent someone from accessing your data in the event someone has it physically. They can do other things to compromise the device in increasingly sophisticated methods, but generally speaking, that's what it's trying to do and protecting your device from those are generally up to other security measures.