This is a good point. On the other hand, drawing a compelling picture of a horse is a hard problem. I could do better than the stick figure but even my best attempt would end up looking pretty awkward and weird compared to a real horse.

I would need a lot of practice and a lot more detailed knowledge of horses to be able to communicate effectively.

This gets me thinking about how it is a lot easier to become convinced of an idea than it is to share it in a convincing way. It's much easier to follow along with a good explanation or argument than it is to recreate one after the fact.

It takes really deep detailed knowledge of a topic and strong communication skills to be able to convey a complex idea in an accurate, understandable and attractive way, especially if the audience is not interested in investing a huge amount of time on a deep dive into all the details.

I can see how it's a lot easier for short-handed versions or simple-but-wrong versions to spread, especially when someone without a deep understanding is trying to share what they've learned from an expert.