Irrespective, the wealth is the property of an individual who earned that wealth through voluntary exchange. If they want to give it all to their kids, to a charitable cause, or just destroy it, that should be their right as owners of that property, it is not just for the state to steal that property because some people don't like it when the parent decides to give that wealth to the child. Focus taxation on things that harm an unwilling third party, not things that involve only two consenting parties where nobody is made worse off.