I don't necessarily disagree with this take, but it's curious to me that your biggest paragraph of criticism for Ep8 was the lack of exposition or setup of 'how we got here', and then you praise the original trilogy story that didn't give us any information about virtually anything that happened before it.
4/5/6 don't tell us how this Empire came to be, who the Emperor is, why he looks like that, what/who the rebellion is and why it matters, and at most we get sparse lines of dialogue in regards to the Jedi and Anakin. They don't tell us who stormtroopers are, what moisture farming is, how the rebellion has a fleet of ships, what role Darth Vader actually has in government, etc. They just drop us into the middle of the story and we're fine with it.
It's not TLJ's fault that it isn't a new story with no expectations. TESB, for comparison, had essentially no expectations of what it would be or where it would go when it was released.