An embedded device with a failed bootloader update is considered “bricked”, even if you can open it up and reflash it with a valid bootloader.
I don’t know why folks are so insistent on gatekeeping the word, as if doing so demonstrates some superior personal knowledge.
Normally I'd have marked the entire subthread offtopic, but hutzlibu's comment deserves to be at the top, even if it does use the word "bricked" wrong.