For anyone else who has a UFO-crazy uncle, I've found Mick West's YouTube channel to be invaluable https://www.youtube.com/c/mickwest. Mick is a retired video game programmer (Spider Man, Guitar Hero, Tony Hawk), who does extremely well-researched videos analyzing UFO claims.

He's not flashy or trying to be entertaining, just thorough, evidence-based and scientifically rigorous. He'll even do controlled experiments, recreations and 3D models to validate what's going on. And he's unfailingly respectful no matter how unhinged the claim. His work explaining the "Gimbal Video" is a good example: https://www.youtube.com/watch?v=Q7jcBGLIpus