Earlier quoted context omitted.
Inheritance taxes are always avoidable, and they could also have devastating consequences. Even if you could effectively prevent a single coin getting to the hands of your children, that would mean lavish expenditures, not investment.
You've asserted several times in this thread that there are devastating consequences to the estate tax but never explain what those might be. Care to enlighten?
If you could effectively put 100% tax on inheritance(which you can't in practice), it means your utility of leaving wealth around becomes 0. Now you want to spend that wealth as much as possible, and it turns into consumption. You would sell and spend everything you have for lavish expenses, which means a reduction in capital investment, which means slower economic growth.