This is the first actual explanation of a dogwhistle that I've _ever_ seen, and I've seen the word used many times. I think we could be doing a much better job about educating outgroups on the terminology that's created to label behaviors we want to effect.
Apart from that, the actual concept seems slightly tenuous to me. Like, it seems like anyone could say something is a dogwhistle against some group and the only way to disprove it is to have people of said group publicly communicate that they don't associate the negative meaning of it. I assume this basically never happens because if you belong to a group that's told they're effected, you'd probably trust that. It seems that this would easily lead to fake dogwhistle proliferation and make the waters _very_ muddy. You could say this assists in the effecacy of the method.
However, having seen these memes be used all the time in many places and never once observing an actual hateful meme, i question why the average person would be concerned. Not only have i never seen honkler in the context of naziism, I've never seen a jewish person (or anyone up to this point) speaking out against its usage in such non nazi contexts. And the fact that there's so many people in these comments saying they never knew it was associated with naziism really makes me question if any of us should be concerned with its regular usage.
It just seems to me like an in group meme that a bunch of basement dwellers think is gonna convince people nazis are okay, which the average person will literally never see in any nazi context at all, and which a small group of people are very very upset about, seemingly believing the claims of the basement dwellers. Like, it could be literally any image, and the vast majority of people would never know the difference. How many people are actually behind effected by this? (Genuine question)
If i see a racist meme I'll call it out, but I'm going to go back to enjoying the parts of the internet that are capable of utilizing arbitrary images for fun.