I think that if you don't know the ins and outs of all things gun, you can still have an opinion about them and how you think they should be regulated.
Agreed. I think it's fine if people advocate for tighter access to guns, restrictions on other things gun related, but many of the proposals are technical in nature and show a significant amount of ignorance in regard to how guns work, gun culture in the U.S., and what effect those regulations will actually have. Typically the proposed regulations are removed from the problem they are supposed to solve by several orders of magnitude.
That's why I've always said that gun regulations in places like California and New York City, and many of the proposed regulations are like Utah's liquor laws.
They are being made by people who are not familiar with the item being regulated. And these people consider the item to be evil and unnecessary.