I don't know any "gun nuts", but I'm in favor of a person like the babysitter mentioned in the article's first paragraph having the ability, liberty, or (dare I say) right to purchase any firearm he wants at any time.

However, I'm not in favor of people leaving firearms where toddlers can reasonably be expected to find them. Whether it's a babysitter or a cop. https://www.washingtonpost.com/news/post-nation/wp/2016/12/24/an-officers-2-year-old-son-dies-after-he-shot-himself-with-his-fathers-gun-police-say/