Well as with most things, the more tack and grace you have the better. Yes people can also be too PC. Maybe more appropriate would be to PM the person and say, "I love that coral and someday if you have to frag it, please keep me in mind". I think I would be flattered if someone did that. With all the long rhetoric here lately about what should or should not be done or this that and so on and so on, it seems to me that just being nice about things, adding humor when possible and keeping judgement to a minimum or not judging at all (hard thing for us humans to do) is the ticket to all having fun. So my answer, sure go ahead and ask, maybe if you live close, come on over and ya never know, could be a cool friendship.