So is your argument is that satire isn’t a thing? Because this is rather clearly a satirical meme, and that kind of ridicule by inversion is pretty solidly a feature of satirical works.
Irl it was an obviously intentional act that was claimed to be an accident, and this is an accident that is mockingly taking something that’s clearly an accident and describing it like it was intentional but trying to claim it was an accident, to make fun of how utterly unbelievable the original claim is by contrasting it with the same argumentation of something that is very unlikely to be intentional.
I think your mistake is thinking this is a counter argument rather than just mocking their idiocy with some really dry satire.
They’re not mocking the misidentification of the salute, they’re trying to muddy the waters to dilute the accusations, like they have every single time something wants to stick. This is their standard playbook, as is the tone policing that comes with it.