That doesn’t equate to what you wrote. That’s intentional misrepresentation on your part. The meaning is clear, you should be able to see it.
Did Cain marry his sister? Ken Ham rather strongly implies he did. I’m not aware of any such declaration in the Bible, and yet Ken Ham says it would be OK.
My question to Ken ham is whether it is OK to make up stuff that isn’t in the Bible and then lecture other people’s children about why it is OK.