Surprised nobody even tried to follow the link...im going to save you a minute and tell you that it leads to nothing, but good one by whoever made it, obviously got a few people from the original post on ufc reddit and making the rounds on twitter now. Also should be noted that Fight Pass is currently at around ~248000 thousand videos, while the screenshot suggest that ufc 296 would be the 515870th one, which is unrealistic.

*Also to add there is a singular screenshot of this going around, its always the same countdown time and the task list at the bottom is always the same. Plus they dont add events to the schedule that far advance, dont even have 294 on there yet.