No, it isn't mathematics game play. The God Power Equation is an actual equation that gives correct answers.
Yes, some things are still not explained. How you decided it was 90% is a stretch. Modern science explains a lot.
The letter used for the speed of light is c, which is a constant. It's present in the equations because it needs to be. Relativity predictions agree with experiments to 14 digits of accuracy, which is incredible. Thus, the God Power Equation is correct and not just game play. Please read the article again to see how ChatGPT uses it as if it is the truth (because it is the truth).