Ken Ham and his views on Creationism are like the Tea Party of the religious - extremely right of American Christianity.
The idea that the earth is only 6,000 years old is a radical idea far from the mainstream understanding of the existence of our world, but it's one that he and so many more want to cling to and sell to the rest of the country. They tried real hard getting it into schools and have succeeded to some degree.
This recent debate between Ham and Nye showed the world the silliness and the sheer ignorance of Creationists; the idea will be laid aside, once and for all. Like the Tea Party, they got just stupid enough that everyone is now coming around to seeing how dangerous their thought process is in the world we understand so well through science. A rational world not only rejecting their ideas about Creationism, but also showing the rest of the sane people how idiotic this whole concept really is and how destructive it is to how we live in this world. The die-hard followers will continue to double down; ignorance always does. But the thinking population will prevail with respect to education and understanding of our universe.
When it became obvious what the true colors of the Tea Party were, their radical mind-set and actions began to contribute to their demise. And it continues as we see that many are being ousted from their positions in Congress.Their infiltration of the Republican Party only recently being loudly called out for what it is - the fringe element of society trying to take over our political systems. Like the Tea Party, the groundwork laid down by supporters of Creationism had somewhat of a foothold in our society, but if we are lucky, sooner rather than later, these crazy ideas will also fade away.
To make the case even more, we have another fringe guy speaking up about the crazy talk of Ham and his followers, pushing it along. You know you and your following, and especially your ideas are in trouble when Pat Robertson says you just need to go away. If he says you are spouting stuff that is "making a joke of Christianity!" seems to me you've crossed a line with so-called legitimate Christians.