It's not cool to keep dragging the man's age into the discussion. If you think he is too young and unpredictable then the best course of action is to stay away from this project. Also he is but one among 4 officially stated founders and perhaps one among a larger group of developers involved in this project.

Why did they reduce the number of ETH you can get from a BTC? I don't know but perhaps a reasonable explanation will be forthcoming. We can only speculate. The start value of ETH is actually irrelevant as has been explained by other members previously in the thread. 100 apples at a dollar each or 10 apples at 10 dollars doesn't really matter. The bottom line does not change.

Maybe the dev group felt they should be working with a smaller post IPO number since a large fraction of raised ETH will be mined for years to come. A larger number may psychologically inhibit forward price movement. Just maybe they sat down with all kind of scenarios with their spreadsheets and felt a smaller number is better. I am sure they didn't pull it out of a hat.

Also all aspects of the project are subjected to change until the project is open to public. Surely they have that much liberty. To join or not is of course your right and mine.