I prefer "delusional" to insane because insane seems too strong for what is largely due to cultural (or sub-cultural) delusion, and understandable human emotions/desires.
There are also different degrees of delusions here, and you can have deluders and deludees.
So this covers the spectrum from ignorant\mislead to insane\psychotic.
I also think the general ignorance of most people is largely understated, and not just about evolution in specific and science in general, but woefully underprepared in logic and critical thinking.
Being ignorant of the specifics about science\evolution is curable ...
Being deluded by misinformation about the specifics of science\evolution is curable ...
But they need to recognize and understand logical arguments, and they need to know what it means for concepts to be invalidated.
They need to know that confirmation bias is not validation.
It occurs to me that creationists who have given some thought the matter, rather than those who are just regurgitating what they've been told, aren't objecting to ToE itself. Instead, they object to an implication of the theory, ...
When you can set them down and corner them they will proclaim that there is no problem with microevolution, or even with speciation.
When you look at the process of evolution and speciation, there can be no conflict with creationist thinking about current life and the life observed in recent history. Speciation forms nested hierarchies of descent, and the only question is where this pattern started -- 3.5 billion years ago with cyanobacteria, or 4,500 years ago with a WWFlood.
The real issue is not what evolution says, not what common descent says, but what the evidence shows.
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