You posted an image of the old form. The new form has a question 10a and a question 10b.
You can find the new form here:
https://www.atf.gov/files/forms/download/atf-f-4473-1.pdf
Yes, I know. What I was pointing out is that the article is bullshit.
The form asks if you are an illegal immigrant. I guess that is so they can send you a voter registration form.