As I’ve said like 4 times now the reason I marked it that way is because the term “machine shop” is ambiguous and the tag is being used on a range of different objects that seem to have nothing in common. Except some of them can clearly be better tagged as Tag:man_made=works + Key:product =*. So that was what I choose as the alternative at the time. I’m sure there’s other tags out that would work better. I don’t really give care about what specific tag the POIs are ultimately re-tagged as. The important thing is not using Tag:industrial=machine_shop as an ambiguous catch all, which I don’t see you having a solution to.

That’s one of the ways it’s currently being used though and I don’t think doing a simple copy paste into the article of what Wikipedia says about machine shops into the article is going to magically correct the problem or make people use the tag how you think they be using it. The problem here is that in general parlance a machine shop can be anything from your average backyard garage with a table saw, some random screw bits, and a few pieces of wood, to warehouse where a college holds it’s mechanics class, and more industrial sized factories that produce prototypes or whatever. It’s the same problem with “workshop shop” BTW.

You can’t get over that just by re-writing the article and trying to police people into using your definition either. The tags are fundamentally flawed. There’s also already much less flawed alternatives out there that are perfectly fine to use instead. Key:product =* being one. I’m sure there’s others. There’s no legitimate reason not to just them instead of this either.