Yeah we're uptight because we want to follow important, life preserving guidelines that minimize accidental and negligent discharge that can result in maiming or killing another human being or yourself.
Guns aren't toys.
You can get enjoyment out of them, but it is a tool first and foremost. Automobiles are used primarily to transport materials and people from point A to point B. You can bring it to the track on weekends for some racing or enter it in an autoshow, collect it for value, or customize it to your heart's content. Firearms are a tool first and foremost. You can shoot it at a gun range, at gun matches, customize it and collect them too. However when you start becoming reckless in either of these hobbies, you can get yourself hurt or killed very quickly.
Not following the "golden four" rules (and some sources refine even more rules, I have 10 listed in my Budweiser Sportsman's Guide to Firearms Safety and Hunter Ethics
) of firearms safety is negligent and has, and will injure or kill other people or yourself in the process. This in turn makes ALL gun owners appear as halfwit lowbrow morons by the news media and further fuels an already large hatred towards firearms and those that own them.
People race their cars down busy highways and freeways because its fun for them. Yet it jeopardizes the lives of others, not only themselves. There are thousands of street racing videos and websites. Using your line of logic, if they didn't hurt anyone before, they wouldn't have a website. Oh, but to the contrary; street racing has hurt or killed the participants as well as innocent bystanders and there are endless websites and videos of such activity. Anyone can put up homemade videos on the internet. The street racing scene makes people who hotrod their cars in general seem like dangerous Fast And The Furious wannabes.
Promotion of unsafe firearms handling is along the lines of promoting street racing. Maybe the videos were recorded in a closed, controlled environment that was justified safe by their staff but the videos at face value show a lax of gun safety (shooting while looking away at the target, fingers inside the trigger guard, etc). If people were sticking their heads in microwaves or pounding nails up their nose...only harming themselves, then let Darwin take over. In this case, they aren't. Someone is going to get the bright idea that this is the norm and try it. Someone will get hurt and it will turn into a big stink.