I am pretty sure Gunnar was joking, but I still gotta wonder how Weinstein was involved with the LOTR movies...
It was produced by New Line Cinema, which was then later bought by Warner Bros., not Miramax...?
Also, punishment should only happen forward indeed, but should be by the studios not employing them, because if we just don't watch the stuff these people made or are in, a lot more people get punished who are involved in the process of making a film. But then again, if they still hire him, things are fair game. Like Ridley Scott realized and acted upon last year with All The Money In The World.
And sadly we have to agree, that this is not a new phenomenon, it is just that the modern times now encourage the victims to step forward.