I agree with the idea of this meme. Every person who uses a gun needs trained. The statement that trained kids don't have accidents is wrong. It's called an accident because we all have them. Kids have them all the time. A better statement would be: Kids Should Be Properly Trained.
The problem here is not the message, it the messenger. Showing a little girl dressed in oversized camouflage (note the sleeves) properly holding an empty gun on the porch may give some other message. It just seems a little bit disturbing, for some reason. It could be the background or the age of the subject or the deadpan look she is giving the camera. It's the optics.
It really makes no comment on gun control, unless, of course, one is advocating for laws requiring training, but I don't think that's the intent, and a law requiring training would be a form of gun control.
Finally, what's with the hat? Does anyone know what language that is?
You see it really is about optics. Oh, if you have kids or you own a gun, please get them and yourself trained. Thanks.