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.
Weird discussion since we're talking about a piece of hardware that is working fine and doing exactly what it was told to do. They just pointed it in the wrong direction and need to wait for it to recover, which it is set up to do.
We wouldn't say a server with the router IP address misconfigured was "bricked." (or maybe we would... I guess the jargon changes, but that would seem pretty crazy to me)