It is layering. A interesting story for children and also an interesting story for adults. Children see only the glorious Jedi and adults see the cracks and flaws and how the Jedi fail Anakin which leads to his fall. Children seen someone giving in to anger and hate and turning bad. A very good moral lesson. Adults see lopsided teachings, an evil mentor grooming Anakin for an evil future, and a dogmatic religious order out of step with the times. Kids see a story about what not to do and Adults see a story about what not to do - both aimed at their age group. Brilliant story telling. If only the dialog and directing was so brilliant.
George Lucas has said over and over that the films are made specifically for 12 year olds. Over and over. Why would he incorporate something that’s apparently so essential for the story that would go over their heads? Especially when 12 year olds are supposed to be the main audience? He literally says that the optimal age to watch Star Wars is when your 12. How does it make any sense that essential parts of his films would not be able to be digested by children? Because the answer is that it’s not. That’s something you made up. Why would he make the films so that Yoda is obviously meant to be the all-wise mentor figure and the Jedi the good guys? Because he wants children to use the Jedi as a moral basis. He wants children to learn Jedi teachings, AKA his own philosophy.
Also Palpatine grooming Anakin is so obvious children would be able to see it. That’s not something only an adult would be able to see. That’s why you will see adults complain how about obvious Palpatine’s manipulation is. “Why is Anakin so stupid, why can’t he see he’s being manipulated?”, “Why’s Palpatine so obviously evil?” The answer is he’s making it obvious so that children can pick up on it.
The reason people project these alternative meanings on the prequels is because they’re films for children, and therefore will make it more complex then it actually is in a desperate attempt to make the films appeal to them more. Not that the prequels aren’t complex, but the fact is, “The Jedi are good, the Sith are bad” is a still a bit too black and white for some adults. So they have to make it “You see, Jedi ideology is actually somewhat wrong, they say you can’t ever be afraid or attached to anybody, what assholes!” when that’s not what Jedi ideology is. But people wanna cling on because the idea that the Jedi are morally perfect is boring to them. Adults project flaws onto the Jedi because they can’t relate to morally perfect characters like children can.