Andor demonstrates that you can tell a well written, no homework required, standalone story that's also part of a universe.
One of the biggest issues I have with Disney Star Wars is that nearly all of their projects have become too interconnected. Almost every project requires homework and nearly nothing works as a standalone even when it's meant to be a standalone.
Tony Gilroy set out to write a compelling, no homework required, self contained narrative that could appeal to both Star Wars fans & non Star Wars fans.
The main protagonist and other supporting characters previously appeared in other Star Wars media, but unlike the Ahsoka TV series, Andor wasn't written under the assumption that you already knew who these characters were. If you haven't seen or read a Star Wars thing in your life, you could still come away from the show thinking these characters were interesting.
It also has a definitive ending. None of the episodes are backdoor pilots for spin-offs and it doesn't end on a cliffhanger.
I don't have anything against the idea of a multi-media universe, but I do agree that people shouldn't have to do loads of homework before watching or reading a thing they're actually interested in.
Also, unless it's meant to be a traditional sequel, they also need to tell stories that feel complete.