The creationist I know don't dispute the science much, just handwave that Supreme Being's can do such things, which of course they could if they were of a mind to and poke a soft spots - or what they think are soft spots - in bio or physics. They are typically neither Luddites nor anti-science and mostly take the view that just because the pond in someone's backyard could form naturally it doesn't mean someone didn't landscape it in there with a backhoe and make an effort to make it look natural. I don't agree but it's a logical valid argument if one starts with an Almighty and Hands-on Creator. As for the 9/11 sorts, it's not like even senior undergrads in architecture, engineering, or physics get courses on how to model and identify reasons for falling skyscrapers. Science has jack to do with why most of us dismiss those theories, except maybe psychology, since our reason is all the same, that it would take an absurdly elaborate and wide conspiracy to hide a bomb and if you were going to use a bomb you might as well just openly use a bomb and claim terrorists did it. That's not science, just logic and common sense using the premise that it would take a extremely large and loyal and clever group to pull that off and that they'd presumably be smart enough to just rent/steal a truck that pointed at a known terrorist and skip the needlessly complex plane ramming, or all the other convoluted stuff in the various other theories. No science involved for that for Average Joe.