The anti-intellectualism and priest class of the church is what kept it there.

You misspelled Islam and the bubonic plague.

The dark ages weren't just marked by the Roman collapse (which had nothing to do with "degeneracy")

Please present evidence to support your position that Roman collapse had nothing to do with degeneracy.

but the period afterwards in which scientific and artistic advancement stagnated. This was because the priest class asserted that all truth was in the bible, and more specifically their interpretation of it.

Yes, surely the stagnation of scientific and artistic advancement had nothing to do with hundreds of years of unending raids from floor worshipers all over the Mediterranean, even as far away as Ireland. Everybody knows that painting, sculpting, and research can be successfully achieved despite hundreds of years of surprise raids by black rock worshippers.

The enlightenment period was more a rejection of the priest class and the infallibility of the bible,

Martin Luther has entered the chat.

but not a rejection of Christianity. The artists and scientists believed that science was a way to understand god, as it's literally the study of god's creation.

Well look at that, we actually agree on something.