I feel your pain.
I have an in-law who believes in flat Earth, believes space is fake, space travel is all lies and CGI... He also believes aliens are real (they come from 'real' outer space, I presume from other flat planets) and real photographic evidence is visible on several planets and moons in our solar system (which, remember, is fake), ghosts are real, seances are real, chiro is real, magnets can heal you and your dog, covid is fake (except when he has it), the moon is hollow (and also fake), the purpose of medicine is to make people ill and all doctors and nurses are in on it (except for chiro, crystal healers, etc., who have no reason to lie), and I could go on.
( brb Learn Ukrainian and prepare for a referendum, Wed 5 Jun 2024, 16:13, 1 reply, 9 months ago)

Don’t forget the ‘Dome Ceiling’ that covers the ‘Flat Earth’, which makes space travel impossible.

( atomic A-bomb-a-nation, Fri 7 Jun 2024, 0:27, Reply)