Not defending the prequels but that isn’t necessarily true. Showing anakins son learning what the force is for the first time is worthwhile even if the audience already knows.
But the problem is that if the audience isn’t familiar with Star Wars and starts with Ep.1, they have no idea about the Force, cause nobody tells them about it until Ep.4.
If these films were truly designed to be watched in order, that wouldn’t be the case.