Young earth creationists are notorious for two things (among others):
- a handful of them have obtained a PhD in a relevant scientific domain, doing research the legitimacy of and basis for which they intend to repudiate as soon as they have the letters after their name, with the sole aim of adding legitimacy to the ideology that they adhered to before ever studying science; and
- they claim that the overwhelming consensus of those who have PhDs in biology, genetics, paleontology, geology, and other relevant scientific domains is wrong, and that these experts are untrustworthy.
They cannot have it both ways.
Either a PhD is indicative of expertise in an area, in which case laypeople ought to accept an overwhelming consensus of the experts where one exists (as it does in relation to evolution and the age of the earth); or it is not, in which case a few young-earth creationists having PhDs does nothing to support their cause.