Mate, everyone is entitled to view that video and say what they think it shows.
Your response to me suggests you agree that McBurnie was stumbling over the fan. If in that case he was stumbling over him (or striding over him as someone else has said), why does it appear to show him having a couple of attempts to stumble or stride over him and why does McBurnie once he’s completed stumbling or striding over him stay stood over the fan rather than carry on walking forward towards the direction he was initially walking in?
These are probably the sorts of questions the police will be asking I would have thought.