Because 'intelligent design' was designed specifically to get Christianity taught in schools alongside and equal to the Theory of Evolution. The purveyors of that religion see their grip on unreality slipping to reality so they've been busy coming up with whatever batshit will stick to the wall. The 'creation museum' is one such endeavor into ridiculousness. They have dinosaurs with saddles on them and children playing next to them.
There is nothing intelligent about ID except the way the fake Christians that came up with it are trying to sell it as something it isn't. They are using the big lie because their bigger lie isn't working any more. Their arguments continually lose in the debate in the public square. Myths have a tendency to slowly die out as actual knowledge is gained, and people no longer believe a snake talked or that we are all responsible for one woman eating an apple and therefore subjecting the rest of us to an eternity of torture at the hands of a flying father figure who commands all humans to love him or burn in torture forever. That is what Kim Jong IL does.