They're not scientists, but they know enough to selectively deny research that threatens their ideology.
By the way, I salute you for you courageous debating in this dumpster fire. It is terribly frustrating to deal with deniers. How do you have a respectful debate when one side refuses to recognize facts?
I feel ya on the title. It is really frustrating to talk to people who just deny any fact you try to show them. "It is impossible to win an argument against a stupid person because they will drag you down to their level, then beat you with experience."