The vehicle likely does not have any protection systems or encryption. It likely has the bootloader integrated with the kernel. It is also running native or native like Android packages while altering zygote behavior so that extra applications are only loading in at execution time.

If you really want to understand the subject, intuitively grounding your understanding is a critical aspect of the processes. Telling people the simplified basics in isolation does not create useful understandings and assumes the person is on a similar foundational understanding. Someone that is genuinely curious, such as myself, but having no prior background can make use of such abstract overviews. Someone with total recall would likely find me pedantic. With abstracted intuitive thinking as a primary function, many people such as myself require such deeply embedded intuitive connections to make sense of the world with a deeper understanding of the connections involved. I retain no information in isolation in long term memory. This is neither right nor wrong in some asinine simple view of the world and the way people learn. If you find it odd, that is fine. Functional intuitive thinking is one of the rarer outlying personalities, but it is also the emulator function that can fake the rest with effort.

It is related, but on many levels, and useful to someone other than yourself. A binary perspective of learning and sharing of information is fundamentally incorrect.