hardware tag is useless on a site focused on hardware. I vote to burninate this tag.
Currently (as of 2021-07-18) there are 393 questions tagged hardware and 23 tag watchers. 28 of the questions have been "favorite" bookmarked and there are a lot of upvoted questions and answers, so there is some quality content here that we should try to preserve.
However it does seem like anything that isn't "hardware" doesn't really belong here, so the tag itself seems redundant. In many cases, the questions and answers would still be useful and could be found without the "hardware" tag, but there are a few questions that would be left untagged.
I ran a SE data query to find questions that have no other tags besides "hardware" (link below); so before we delete the tag hardware, we should examine each of these (29) remaining questions and either retag or close/delete these questions, otherwise they will become untagged. Some of these questions have accepted answers, multiple answers, upvotes, bookmarks (favorite), so there's some value worth saving.
We should try to retag only a few at a time, to avoid spamming the "active questions" page -- retagging a question bumps it up to the front of the list, and it doesn't take very much retagging activity to drown out actual new questions.
As of 2021-07-17, these are the questions that have only the single tag hardware:
For reference, the query is here (originally from user Passerby):
Declare @Tags nvarchar(150) Set @Tags='<##Tag##>' Set @Tags = Lower(@Tags) Select Top 5000 Id As [Post Link], CreationDate, ClosedDate From Posts Where Title is not null And Tags=@Tags Order By CreationDate Desc
When there are no longer any questions meeting this criteria, it will then be safe to delete the tag administratively, and blacklist it (I think that requires one of the diamond-moderators).