If the article starts off this way, then the assumptions during the course of the article will typically reflect this.
Just because an animal is faster than a human, do we therefore need to worry about How, Why, When or anything about that animal?
Just because an animal can run lets say 30km/hr faster than a human naturally - who cares. It’s mute.
One needs to consider how much one can improve upon their natural ability - and looking at Untrained subjects that are faster than humans does not help.
What helps is looking at how Such and such animal or Human got 1 or 2 or 3 seconds quicker from base over say 100m
If a scientist can make a cheater run 2-3sec quicker over 100m than the same cheater ran 1-2years ago, then that’s something.