All we actually know though is that every single person involved in the stadium - from the architect to the club to the mayor - has said the stands will be steep and close to the pitch, an intimate atmosphere is the priority and the running track will be there literally for two weeks and have zero impact on the stadium's design.
People aren't freaking out about "what we know", they're freaking about their own assumptions and fears. Which is perfectly fine, btw, but if we're dealing only in facts then the time for panic has not yet arrived.
I put this on the other thread, but i think it is relevant here:
Basically, an athletic track will eat into each end of a hypothetical football stadium by a minimum of 34.57m. That means if we want straight stands (as apposed to a bowl) with the seating at the maximum permitted steepness (35 degrees), the track would need to be elevated by a massive 25 meters. There is no way that the incorporation of a running track will not compromise the design of our stadium.