The phrase "people are stupid, dogs are stupid" means that if people grow too strong, they will often become more powerful, but they will also become dull and inflexible, and they can only win by brute force.

The whole sentence should be sent to "people are stupid, dogs are stupid, buns are full of leeks" instead of "people are stupid, dogs are stupid, buns are full of leeks"

There is a saying in the village: people are stupid dogs, and when steamed stuffed buns are big, they are leeks. This is another way to solve stupidity.