Nomoi: The bug i chose is deliberately complex one, obscure enough only folks familiar can see what's going on, hopefully ensuring some longevity/not having to babysit much.
This is because whenever the exact details (or the bug is trivial to see/fix) are described it often leads to some "good samaritan" pestering the vendor for a fix. Quotes, because more often than not they have a commercial interest in making loud noises, with complete disregard that they're breaking things for everyone. One such example of this in the past is
https://www.synacktiv.com/posts/hard...-reverser.html
Overall I'm all for vendors making root somewhat difficult, so as to scare away inexperienced users who would brick stuff. However a vendor that aggressively locks the device (Apple, Amazon) have clearly other interest than consumer protection in mind.