Stupidity with formulas is still stupidity. The earth is about 4.6 billion years old and none of your nonsensical “reasoning” affects that at all.
The post wasn't about the age of the earth. Regardless, one can "believe" theories that say the earth is 4.6 billion years old. It may well be. But scientists are fish in an aquarium and there observations of what is outside there aquarium are very limited.