It's funny you are calling this debunked, while no one has officially made any statement regarding this. An unnamed "Academy source" is most certainly not "the Academy itself" and "defended the categories’ merits, maintaining that only 20 votes could be cast per Twitter handle and that accounts less than a day old were banned from voting" is not suggesting that it didn't happen, it's only adding parameters as to why it might have been more difficult than some might think.
I'm not running with any narrative. I haven't seen anything official saying it is or it isn't true, so as to make up my mind. I can very well buy that it happened, but I'm not taking it for granted, unless there's more info or confirmation on the matter.
What I said that might not have been clear was, bots or no bots, fans went at great length to prove there was general demand for something that clearly hasn't been for many years. Having a small loyal fanbase supporting something is different than having a big fanbase that cares for it. Believing that Army of the Dead, one of the most forgettable films in recent times, was the fan-favourite #1 of last year is laughable. The same goes for thinking that the majority of people found the Flash scene, shown in a movie that wasn't even seen by that many people, the most iconic in cinematic history, surpassing the Matrix bullet dodge, amongst others.
It wasn't just Snyder fans that went at great lengths to try to make a point, there were also the Depp fans. Minaramata, a film that only few people are even aware of its existsance, was one of the other final contenders of the same race. Also Cinderella for some reason. Sorry, but people who have the more free time and desire to do anything to prove that their favourite is number one and that more people care about it than they actually do, doesn't mean anything to me. And if the bot thing is true, it once again shows how much fanaticism exists in some places of fandom. Not that it'd be anything new regarding some Snyder followers.