Have you seen them outside of light pollution? I'm not saying they're draw-by-the-numbers, but there's a ton of relevant stars that aren't visible to 75% of the global population from home. You can count the stars of the little dipper to gauge your light pollution. It has 7 stars. If you can't see at least 6, you're missing most of the bears

Try psilocybin or similar psychedelic and look again. Those ancestors were tripping and saw those shapes almost flawlessly. I bet their imaginations ran wild.

I can never pick out constellations