I think its very much a case of one bad egg ruining it for the rest of them.
I'm a member of the vic supra club, and would personally be happy to have skylines on our cruises (heck one of my clossest friends owns a GTR) but i also do understand that sometimes you do want only a specific make of cars present ( ie we recently had a supras only dyno day).
Any cruise i organise - the more the merrier and its always open to anyone.
I look forward to a joint cruise in vic with responsible drivers thankx.