There is no tank on video. I’ve seen light infantry and BTR on premises, pretty consistent with the idea of the small garrison defending the station from sabotage.
The turret is clearly visible for about .25 seconds. Try watching the clip fullscreen from 15 to 18 seconds. Even easier to see if you pause playback and then go through it by skipping left and right.
There’s no value in playing the “I see no ships” trick of putting your telescope up to the Z branded eyepatch on this occasion. I’m visually impaired and yet and I can see it clearly. To be fair, it could be a turret from something that’s not a tank, but I don’t think it looks like a T shirt cannon.