It is odd, because OKC is a large city, but it's not dense. However, the Bricktown area of downtown is a cultural hub, which hosts the NBA team as well as lots of dining and activities.
There are lots of other similar examples. The justification for this in OKC just isn't there IMO --- and is unlikely to ever be there for one major reason --- limited water supply.
https://www.koco.com/article/oklahoma-city-utilities-departm...
Major high density cities demand a large water supply.
This is more about them proving themselves ascendant, than anything else, if I don't miss my guess. A better model might be Dubai, also home to some famously tall skyscrapers... its density is probably lower than can justify those, but they were built anyway to prove how ascendant their form of Islam is.
Burj Khalifa is named so because Sheikh Khalifa of Abu Dhabi had to bail out both the Burj Dubai and the government of Dubai during the 2007 financial crisis.
In other words, it's all about marketing --- not logic, reason, economics or good urban planning.
In OKC, it's not just the spire but the entire building that is about showing off. The rationale is missing --- which is why I doubt it will ever be built as proposed.