this is why you do cross-check, and need to understand the limits on the precision of realtime war info. A lot of info has significant fuzziness and consumption of it is an active process. For the snake island there was information that communication got lost at some point during the battle, and they stated that most probably all the guys died. It wasn't intentional disinformation, and that is the key difference from Russian TV. For the ghost of Kiev - the planes got shot down, while who shot down - was it the same guy or not - is very hard to find out until military gives you that, and i wouldn't hold it against the TV people who built this legend without waiting for full confirmation or denial - again you need to understand there they can get carried away and why.

For contrast, to illustrate what disinformation is - Russian TV continue to claim non-attacking of civilians while you can easily find huge number of videos (which you can easily cross-check/geolocate/etc.) of civilian targets being attacked.