thats why they hang counterweights from it, so that it doenst tilt too much and make like a famous tower in italy.
Tilt Vs Sway. Get that right.
Counterweights, or any weights for that matter, worsen tilt. They can even get the structure to break.
Tilt is majorly caused by weak soil or weak foundation, exactly as in the tower of Pisa. Foundations can be weakened even after having been built very solidly, due to extreme circumstances in nature.
Sway is caused by wind, earth's rotation, and due to tectonic movements. Balancing weights that swing in the opposite direction of sway are applied in these cases.
Now, tilt is quite possible in Burj Khalifa due to the geography itself, but so early after construction? Possibly not. Does it sway? Yes, right from the idea itself.