Anyone truly committed to the idea that the Moon landings were a hoax will never be convinced no matter what.
The woman who directs one of the choirs I'm in is a flat earther and to be a flat earther you have to also be a moon landing hoaxer. She's a very talented musician though and we work together frequently. She never brings up any of this during rehearsals, for which I am grateful.
Back when she was first being sucked into the flat earth thing she and I had a very long DM session where I tried to dissuade her but was not successful. She really wanted to believe it.
Nevertheless we maintain a good relationship musically. I have nothing but respect for her abilities in that regard. You can get along with such people perfectly fine provided you have something else to do and talk about.