Oh wait.
Why should the average person need to understand the jargon of an economics expert? The average person should be able to buy bread and shelter. Isn't that the understanding they need?
Just like, why should the average person need to understand the different types of ozone depleting gasses? The average person should be able to breathe clean air and live in a city/state/nation that's not literally being swallowed by the ocean.
Does the average person need to understand what a software engineer means when they talk about concurrent asynchronous calls kept in check by a byzantine generals algorithm to ensure consistency across nodes?
I'm sure if the average person spent 100 hours studying economics they could grasp the basic concepts quite firmly.
But, quite literally, the entire point of having experts in a society due to the advent of specialization stemming from the agricultural revolution is so that people can do and learn different things and the sum of the parts can be greater than the whole.
If you want to learn more about economics than go do it, but attacking an entire field because you can't be bothered to learn its particular jargon seems shortsighted at best.
No one's saying "trust everything blindly", either.