Flat Earther, and other conspiracy theories. Are they mostly atheists?

[Ferrocyanide]

I think the reason is that atheists care about sanity, logic, science.

Some do.

Of course, but I was speaking about the flat earth forum and other locations I visit.
There seems to be a lacking number of jews, christians, muslims trying to inject some sanity, logic and science into this world + christians outnumber atheists in the USA and Canada yet they seem strangely absent.
For example, when the issue is young earth creationisms (+big bang theory +Biological evolution), again, the christian groups are mostly absent.