I don't think it's misleading, it's just that there are different preconceptions based on the audience. If there was an article about "How two brothers turned a 3 oz piece of metal into a billion dollar startup" and it was a highly machined part that fit a really useful case in the auto industry, we would rightly assume they were talking about what they sold, and that a lot more work went into actually making and perfecting it. If the same article was read by machinists, they might take issue with it like people are taking issue with this headline, but that's because of the context they are perceiving it in.