I asked him “what color were the clouds back then?” and he said they were white. I asked him what happens if I take an orange light and light up something that’s white with it. He ignored me. He went on about how everyone in his age group remembers the Sun being orange, and by me questioning him, I’m calling him and all his peers liars and I’m stupid because I’m younger than him and vaccinated.
I mean same for photography, tv, film and even artistic renderings. They probably consumed a lot of media and can draw parallels and contrasts just from those.
This makes some sense. Clearly the friend is a bit of a conspiracy theorist, or trolling. There’s a decent chance they are younger too. That being said you’re the only person with a reasonable feasible explanation that might get through to the friend.