bricked has been used with 16 questions, but it is applicable to a pretty high percentage of questions. It's good information about the current condition of the equipment, but it's too meta to be useful as a tag and should just be included in the question.
Yes, since it's currently applied to many different things (routers, BIOS, SSDs, even Windows), nobody can be an expert in all things bricked. It's kind of like saying something's broken - not helpful in the least.
I might be on board with, say, a bios-bricked tag because it's entirely possible for somebody to be an expert in saving toasted BIOSes.