Who fucking cares? You can create some really amazing shit with it and if you want to make a cool 4k demo raymarching is one of the best ways to do it.
Those guys created some really impressive stuff within 25mins coding in front of nearly 1000 people watching them.

Lite-C Tut. 1 Lite-C Tut. 2 Lite-C Tut. 3 (en)
Shader Tutorial (ger)

http://www.slindev.com