I legitimately know people who hold the belief that Satan put all fossils in the ground to "lead us astray"

The same people, when speaking a different time, have said that GOD put them there as a test of your faith.

And I know unrelated people who believe fossils aren't real, and that the shells I can literally point out in limestone all around the area are less than 6000 years old, or just rocks that look like shells/coral.