While their corporate structure is shadowy, their revenue distribution between creators is not. The source for this is in this video [0][1] by TLDR Business.

Essentially, all the money collected by subscriptions is paid to creators based on the number of views on their videos.

[0] https://nebula.tv/videos/tldrbusiness-how-does-tldr-really-m...

[1] https://www.youtube.com/watch?v=clfti6Do9lc