I don't intend to sway you one way or the other just stating fact. If brass bothers you don't send it. If it doesn't send it.
I believe the warning from CH is because once he drills the center post out you will have exposed brass in the juice path. Some folks have an adversion to that and others don't mind. There have been multiple write ups about soaking brass in a solution of something to remove any exposed lead. I think it was Quigsworth that posted something a while back.
Someone will come along with better Info I hope.
A heath thing? Geez...I got 3-4 years left so this kind of thing means nothing. I was worried it presented a problem that would make it unusable. I appreciate the warning.