[Zak]

Unlocking the bootloader on many Android devices is not a jailbreak; it's officially supported to varying degrees, though Google also has official support for helping apps sabotage users' ability to run them on unlocked devices so it's a bit of a mixed bag.

Ultimately, it's easy and reliable enough for someone who's interested in tech and likes to tinker, but I cannot recommend it for (to use the canonical example) my mother.