science

Musk is going the Genghis Khan route. In 500 years he wants to be genetic ancestor to the majority of humans. To accomplish this goal he must:

1. Have many children (we're seeing this)

2. Encourage his children to provide him with grandchildren (we see his reaction to his trans child who is therefore unlikely to give him biological grandchildren)

3. Maximize the amount of wealth and assets he earns in his lifetime so that all his children and grandchildren can each be obscenely rich as well, thereby increasing their chances of having many descendants

4. Leverage the capitalist system to give him and his descendants as much control over the means of production and the levers of power as possible, thereby making them more likely to survive societal upheavals

This will give him the posthumous status he desires the most, as people are more likely to forgive historic wrongs if those wrongs were committed by their own ancestors. He can be as horrible as he wants and still be remembered in a good light if the only people around to remember him are people for whom he is intertwined with their own sense of identity.

He expects the future to slowly reduce the amount of children poor people can have as the global population drops due to obvious and intractible economic pressures.