I don't need to worry about "incest between adults" because as far as I know Leo isn't dating his family members.

I'm glad you don't need to worry. But you do posit a standard which would allow for that. Don't you see that someone would then point out that this standard may then not be the be all and end all?

So if consent does not matter (rape apologist)

Are you calling me a 'rape apologist', or was this unfortunate phrasing?

The whole point is that it is necessary but definitely not sufficient.

Also, I don't disapprove of DiCaprio here. I'm just objecting to 'consent-only', which opens the floodgates for all sorts of filth.