Is Rey's nobodyness cause for scorn? Imo the move away from midochlorian lineages and into the force being mystical bullshit that more reflects a person's personality than their CK2 dynasty as per the original trilogy is gud. Helps promote developing an actual personality for the character if the writers stop drinking detergent
The "everyone's a force user" thing is also pretty convenient if you want to make endless sequels and side-stories. Then, you can have budding Jedi popping up wherever and whenever you like, without having to work out how they fit into some larger scheme of things. Perfect for a studio like Disney who'd like to spin off 100 Star Wars related series in all directions.
I don't think this by itself actually makes the writing any better or worse. However, sometimes having
constraints on the origin of a character can make you get more creative. "Write whatever you like" sounds liberating, however, things flow better if you have constraints, and constraints cause you to think of ideas that you'd
never come up with if you're given carte blank to write "whatever".
e.g. would Kylo Ren be a more developed and interesting character
if his parents had also been "nobody"? Or would they have just concocted some hokey backstory that's emotionally unrelated to anything else in the series like they did for Rey? Or Anakin Skywalker for that matter. His story is pretty dark for a main character in any movie series, and it's written like that because of the
constraints of who he is and how he fits into a larger narrative that's not his own. If he'd been written "from scratch" and not been woven into the bigger narrative of his family, it's
certain that he'd end up as a more traditional hero type character: the story constraints forced the writers to write him as an anti-hero, in a movie series that's all about plain old regular heroes.
Another real risk, is that the Star Wars saga was always about family. If they take it in a new direction where family doesn't really matter, which is where the new movies are going, then they lose that aspect of talking to the whole "human condition". With the high attrition rate of any
old characters (either original movies old, or anyone significant who's old in the new movies), the last movie looks likely to be just about a bunch of late teens aged kids battling it out for the fate of the universe.
e.g. Finn, Poe and Rey:
none of them have parents or siblings who are really part of the main narrative
at all (poe's parents being in a comic don't count. They're not characters referenced in the movies). Notice however, that all three main human characters in the original trilogy turn out to be, or end up being, connected by family bonds.