When you start looking at older debunked theories that lasted for a long time you can see the human bias in them. Not just a human bias but a a western bias.

Two that stick out for me:

Trees compete for sunlight - I think it makes sense to us humans because we compete for resources but in truth trees are way more 'community' based

The male alpha wolf - It's how the western world has been organized for centuries so it's easy to see that in a wolf pack even though its not true.