Most people don't understand how mirrors or magnifying glasses work. A rudimentary understanding of physics is preventing them from understanding even the explanation for what they're seeing in pictures from astronomy. Maybe they don't teach that stuff in primary education anymore, idk. My upbringing was much different.

I feel like it's simple to understand, but no more simple than how magnifying glasses or mirrors work, and many people don't really understand how those work unless they've taken university physics. Gravity curving space doesn't make sense as an analogy if you don't understand refraction or how a magnifying glass works.