For the entire duration of the Russia/Ukraine war "combat footage" that is actually from the video game ARMA 3 has gone viral fairly regularly, and now exactly the same thing is happening with Israel/Iran.
And which YouTube happily promotes straight to the top, of course -- thanks to the efforts of its rocket-science algorithm team. (Not sure whether the ones I've been seeing were generated by that particular platform, but YT does seem to promote obviously fake and deceptively labelled "combat" footage with depressing regularity).
The willingness of people to believe that combatants are wearing cinematic body cams for no tactical reason can only be matched by their willingness to assume people meticulously record every minute of their lives just so they can post a once-in-a-lifetime event on TikTok.
Who even needs AI generated videos when you can just act out absurdity and pretend it's real?
As far as I know, most of the viral stuff has been active air defence CWIS and the like which can be hard to discern.
There's a morbid path from the grainy Iraq war and earlier shaky footage, through IS propaganda which at the time had basically the most intense combat footage ever released to the Ukraine war.
Which took it to the morbid end conclusion of endless drone video deaths and edited clips 30+ mins long with day long engagements and defending.
And yes, to answer your belief that there is none - there is loads of "cinematic body cam footage out there now".
Thousands of combatants are wearing bodycams, and pretty regularly, there are videos released by Russians of a dead Ukrainian's last moments taken from their corpse and the same happens vice versa.
Dude I clicked on some random Youtube accounts that were streaming the world cup live, and it took me a while to realize that they were actually just streaming video games replica of the actual game (at least, I think they were simulating the actual game with a video game, but I'm not sure as I didn't compare closely)
Someone once did the opposite - streamed a real pay-per-view UFC match on Twitch and pretended it was a game he was playing. It actually worked for a while before the Twitch mods realized what was going on.
